development/examples/example3/build/assets/sass/bootstrap/_mixins.scss

+// Toggles
+//
+// Used in conjunction with global variables to enable certain theme features.
+
+// Vendor
+@import "vendor/rfs";
+
+// Deprecate
+@import "mixins/deprecate";
+
+// Utilities
+@import "mixins/breakpoints";
+@import "mixins/hover";
+@import "mixins/image";
+@import "mixins/badge";
+@import "mixins/resize";
+@import "mixins/screen-reader";
+@import "mixins/size";
+@import "mixins/reset-text";
+@import "mixins/text-emphasis";
+@import "mixins/text-hide";
+@import "mixins/text-truncate";
+@import "mixins/visibility";
+
+// Components
+@import "mixins/alert";
+@import "mixins/buttons";
+@import "mixins/caret";
+@import "mixins/pagination";
+@import "mixins/lists";
+@import "mixins/list-group";
+@import "mixins/nav-divider";
+@import "mixins/forms";
+@import "mixins/table-row";
+
+// Skins
+@import "mixins/background-variant";
+@import "mixins/border-radius";
+@import "mixins/box-shadow";
+@import "mixins/gradients";
+@import "mixins/transition";
+
+// Layout
+@import "mixins/clearfix";
+@import "mixins/grid-framework";
+@import "mixins/grid";
+@import "mixins/float";

development/examples/example3/build/assets/sass/bootstrap/_modal.scss

+// .modal-open      - body class for killing the scroll
+// .modal           - container to scroll within
+// .modal-dialog    - positioning shell for the actual modal
+// .modal-content   - actual modal w/ bg and corners and stuff
+
+
+.modal-open {
+  // Kill the scroll on the body
+  overflow: hidden;
+
+  .modal {
+    overflow-x: hidden;
+    overflow-y: auto;
+  }
+}
+
+// Container that the modal scrolls within
+.modal {
+  position: fixed;
+  top: 0;
+  left: 0;
+  z-index: $zindex-modal;
+  display: none;
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+  // Prevent Chrome on Windows from adding a focus outline. For details, see
+  // https://github.com/twbs/bootstrap/pull/10951.
+  outline: 0;
+  // We deliberately don't use `-webkit-overflow-scrolling: touch;` due to a
+  // gnarly iOS Safari bug: https://bugs.webkit.org/show_bug.cgi?id=158342
+  // See also https://github.com/twbs/bootstrap/issues/17695
+}
+
+// Shell div to position the modal with bottom padding
+.modal-dialog {
+  position: relative;
+  width: auto;
+  margin: $modal-dialog-margin;
+  // allow clicks to pass through for custom click handling to close modal
+  pointer-events: none;
+
+  // When fading in the modal, animate it to slide down
+  .modal.fade & {
+    @include transition($modal-transition);
+    transform: $modal-fade-transform;
+  }
+  .modal.show & {
+    transform: $modal-show-transform;
+  }
+
+  // When trying to close, animate focus to scale
+  .modal.modal-static & {
+    transform: $modal-scale-transform;
+  }
+}
+
+.modal-dialog-scrollable {
+  display: flex; // IE10/11
+  max-height: subtract(100%, $modal-dialog-margin * 2);
+
+  .modal-content {
+    max-height: subtract(100vh, $modal-dialog-margin * 2); // IE10/11
+    overflow: hidden;
+  }
+
+  .modal-header,
+  .modal-footer {
+    flex-shrink: 0;
+  }
+
+  .modal-body {
+    overflow-y: auto;
+  }
+}
+
+.modal-dialog-centered {
+  display: flex;
+  align-items: center;
+  min-height: subtract(100%, $modal-dialog-margin * 2);
+
+  // Ensure `modal-dialog-centered` extends the full height of the view (IE10/11)
+  &::before {
+    display: block; // IE10
+    height: subtract(100vh, $modal-dialog-margin * 2);
+    height: min-content; // Reset height to 0 except on IE
+    content: "";
+  }
+
+  // Ensure `.modal-body` shows scrollbar (IE10/11)
+  &.modal-dialog-scrollable {
+    flex-direction: column;
+    justify-content: center;
+    height: 100%;
+
+    .modal-content {
+      max-height: none;
+    }
+
+    &::before {
+      content: none;
+    }
+  }
+}
+
+// Actual modal
+.modal-content {
+  position: relative;
+  display: flex;
+  flex-direction: column;
+  width: 100%; // Ensure `.modal-content` extends the full width of the parent `.modal-dialog`
+  // counteract the pointer-events: none; in the .modal-dialog
+  color: $modal-content-color;
+  pointer-events: auto;
+  background-color: $modal-content-bg;
+  background-clip: padding-box;
+  border: $modal-content-border-width solid $modal-content-border-color;
+  @include border-radius($modal-content-border-radius);
+  @include box-shadow($modal-content-box-shadow-xs);
+  // Remove focus outline from opened modal
+  outline: 0;
+}
+
+// Modal background
+.modal-backdrop {
+  position: fixed;
+  top: 0;
+  left: 0;
+  z-index: $zindex-modal-backdrop;
+  width: 100vw;
+  height: 100vh;
+  background-color: $modal-backdrop-bg;
+
+  // Fade for backdrop
+  &.fade { opacity: 0; }
+  &.show { opacity: $modal-backdrop-opacity; }
+}
+
+// Modal header
+// Top section of the modal w/ title and dismiss
+.modal-header {
+  display: flex;
+  align-items: flex-start; // so the close btn always stays on the upper right corner
+  justify-content: space-between; // Put modal header elements (title and dismiss) on opposite ends
+  padding: $modal-header-padding;
+  border-bottom: $modal-header-border-width solid $modal-header-border-color;
+  @include border-top-radius($modal-content-inner-border-radius);
+
+  .close {
+    padding: $modal-header-padding;
+    // auto on the left force icon to the right even when there is no .modal-title
+    margin: (-$modal-header-padding-y) (-$modal-header-padding-x) (-$modal-header-padding-y) auto;
+  }
+}
+
+// Title text within header
+.modal-title {
+  margin-bottom: 0;
+  line-height: $modal-title-line-height;
+}
+
+// Modal body
+// Where all modal content resides (sibling of .modal-header and .modal-footer)
+.modal-body {
+  position: relative;
+  // Enable `flex-grow: 1` so that the body take up as much space as possible
+  // when there should be a fixed height on `.modal-dialog`.
+  flex: 1 1 auto;
+  padding: $modal-inner-padding;
+}
+
+// Footer (for actions)
+.modal-footer {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center; // vertically center
+  justify-content: flex-end; // Right align buttons with flex property because text-align doesn't work on flex items
+  padding: $modal-inner-padding - $modal-footer-margin-between / 2;
+  border-top: $modal-footer-border-width solid $modal-footer-border-color;
+  @include border-bottom-radius($modal-content-inner-border-radius);
+
+  // Place margin between footer elements
+  // This solution is far from ideal because of the universal selector usage,
+  // but is needed to fix https://github.com/twbs/bootstrap/issues/24800
+  > * {
+    margin: $modal-footer-margin-between / 2;
+  }
+}
+
+// Measure scrollbar width for padding body during modal show/hide
+.modal-scrollbar-measure {
+  position: absolute;
+  top: -9999px;
+  width: 50px;
+  height: 50px;
+  overflow: scroll;
+}
+
+// Scale up the modal
+@include media-breakpoint-up(sm) {
+  // Automatically set modal's width for larger viewports
+  .modal-dialog {
+    max-width: $modal-md;
+    margin: $modal-dialog-margin-y-sm-up auto;
+  }
+
+  .modal-dialog-scrollable {
+    max-height: subtract(100%, $modal-dialog-margin-y-sm-up * 2);
+
+    .modal-content {
+      max-height: subtract(100vh, $modal-dialog-margin-y-sm-up * 2);
+    }
+  }
+
+  .modal-dialog-centered {
+    min-height: subtract(100%, $modal-dialog-margin-y-sm-up * 2);
+
+    &::before {
+      height: subtract(100vh, $modal-dialog-margin-y-sm-up * 2);
+      height: min-content;
+    }
+  }
+
+  .modal-content {
+    @include box-shadow($modal-content-box-shadow-sm-up);
+  }
+
+  .modal-sm { max-width: $modal-sm; }
+}
+
+@include media-breakpoint-up(lg) {
+  .modal-lg,
+  .modal-xl {
+    max-width: $modal-lg;
+  }
+}
+
+@include media-breakpoint-up(xl) {
+  .modal-xl { max-width: $modal-xl; }
+}

development/examples/example3/build/assets/sass/bootstrap/_nav.scss

+// Base class
+//
+// Kickstart any navigation component with a set of style resets. Works with
+// `<nav>`s, `<ul>`s or `<ol>`s.
+
+.nav {
+  display: flex;
+  flex-wrap: wrap;
+  padding-left: 0;
+  margin-bottom: 0;
+  list-style: none;
+}
+
+.nav-link {
+  display: block;
+  padding: $nav-link-padding-y $nav-link-padding-x;
+  text-decoration: if($link-decoration == none, null, none);
+
+  @include hover-focus() {
+    text-decoration: none;
+  }
+
+  // Disabled state lightens text
+  &.disabled {
+    color: $nav-link-disabled-color;
+    pointer-events: none;
+    cursor: default;
+  }
+}
+
+//
+// Tabs
+//
+
+.nav-tabs {
+  border-bottom: $nav-tabs-border-width solid $nav-tabs-border-color;
+
+  .nav-item {
+    margin-bottom: -$nav-tabs-border-width;
+  }
+
+  .nav-link {
+    border: $nav-tabs-border-width solid transparent;
+    @include border-top-radius($nav-tabs-border-radius);
+
+    @include hover-focus() {
+      border-color: $nav-tabs-link-hover-border-color;
+    }
+
+    &.disabled {
+      color: $nav-link-disabled-color;
+      background-color: transparent;
+      border-color: transparent;
+    }
+  }
+
+  .nav-link.active,
+  .nav-item.show .nav-link {
+    color: $nav-tabs-link-active-color;
+    background-color: $nav-tabs-link-active-bg;
+    border-color: $nav-tabs-link-active-border-color;
+  }
+
+  .dropdown-menu {
+    // Make dropdown border overlap tab border
+    margin-top: -$nav-tabs-border-width;
+    // Remove the top rounded corners here since there is a hard edge above the menu
+    @include border-top-radius(0);
+  }
+}
+
+
+//
+// Pills
+//
+
+.nav-pills {
+  .nav-link {
+    @include border-radius($nav-pills-border-radius);
+  }
+
+  .nav-link.active,
+  .show > .nav-link {
+    color: $nav-pills-link-active-color;
+    background-color: $nav-pills-link-active-bg;
+  }
+}
+
+
+//
+// Justified variants
+//
+
+.nav-fill {
+  > .nav-link,
+  .nav-item {
+    flex: 1 1 auto;
+    text-align: center;
+  }
+}
+
+.nav-justified {
+  > .nav-link,
+  .nav-item {
+    flex-basis: 0;
+    flex-grow: 1;
+    text-align: center;
+  }
+}
+
+
+// Tabbable tabs
+//
+// Hide tabbable panes to start, show them when `.active`
+
+.tab-content {
+  > .tab-pane {
+    display: none;
+  }
+  > .active {
+    display: block;
+  }
+}

development/examples/example3/build/assets/sass/bootstrap/_navbar.scss

+// Contents
+//
+// Navbar
+// Navbar brand
+// Navbar nav
+// Navbar text
+// Navbar divider
+// Responsive navbar
+// Navbar position
+// Navbar themes
+
+
+// Navbar
+//
+// Provide a static navbar from which we expand to create full-width, fixed, and
+// other navbar variations.
+
+.navbar {
+  position: relative;
+  display: flex;
+  flex-wrap: wrap; // allow us to do the line break for collapsing content
+  align-items: center;
+  justify-content: space-between; // space out brand from logo
+  padding: $navbar-padding-y $navbar-padding-x;
+
+  // Because flex properties aren't inherited, we need to redeclare these first
+  // few properties so that content nested within behave properly.
+  %container-flex-properties {
+    display: flex;
+    flex-wrap: wrap;
+    align-items: center;
+    justify-content: space-between;
+  }
+
+  .container,
+  .container-fluid {
+    @extend %container-flex-properties;
+  }
+
+  @each $breakpoint, $container-max-width in $container-max-widths {
+    > .container#{breakpoint-infix($breakpoint, $container-max-widths)} {
+      @extend %container-flex-properties;
+    }
+  }
+}
+
+
+// Navbar brand
+//
+// Used for brand, project, or site names.
+
+.navbar-brand {
+  display: inline-block;
+  padding-top: $navbar-brand-padding-y;
+  padding-bottom: $navbar-brand-padding-y;
+  margin-right: $navbar-padding-x;
+  @include font-size($navbar-brand-font-size);
+  line-height: inherit;
+  white-space: nowrap;
+
+  @include hover-focus() {
+    text-decoration: none;
+  }
+}
+
+
+// Navbar nav
+//
+// Custom navbar navigation (doesn't require `.nav`, but does make use of `.nav-link`).
+
+.navbar-nav {
+  display: flex;
+  flex-direction: column; // cannot use `inherit` to get the `.navbar`s value
+  padding-left: 0;
+  margin-bottom: 0;
+  list-style: none;
+
+  .nav-link {
+    padding-right: 0;
+    padding-left: 0;
+  }
+
+  .dropdown-menu {
+    position: static;
+    float: none;
+  }
+}
+
+
+// Navbar text
+//
+//
+
+.navbar-text {
+  display: inline-block;
+  padding-top: $nav-link-padding-y;
+  padding-bottom: $nav-link-padding-y;
+}
+
+
+// Responsive navbar
+//
+// Custom styles for responsive collapsing and toggling of navbar contents.
+// Powered by the collapse Bootstrap JavaScript plugin.
+
+// When collapsed, prevent the toggleable navbar contents from appearing in
+// the default flexbox row orientation. Requires the use of `flex-wrap: wrap`
+// on the `.navbar` parent.
+.navbar-collapse {
+  flex-basis: 100%;
+  flex-grow: 1;
+  // For always expanded or extra full navbars, ensure content aligns itself
+  // properly vertically. Can be easily overridden with flex utilities.
+  align-items: center;
+}
+
+// Button for toggling the navbar when in its collapsed state
+.navbar-toggler {
+  padding: $navbar-toggler-padding-y $navbar-toggler-padding-x;
+  @include font-size($navbar-toggler-font-size);
+  line-height: 1;
+  background-color: transparent; // remove default button style
+  border: $border-width solid transparent; // remove default button style
+  @include border-radius($navbar-toggler-border-radius);
+
+  @include hover-focus() {
+    text-decoration: none;
+  }
+}
+
+// Keep as a separate element so folks can easily override it with another icon
+// or image file as needed.
+.navbar-toggler-icon {
+  display: inline-block;
+  width: 1.5em;
+  height: 1.5em;
+  vertical-align: middle;
+  content: "";
+  background: no-repeat center center;
+  background-size: 100% 100%;
+}
+
+// Generate series of `.navbar-expand-*` responsive classes for configuring
+// where your navbar collapses.
+.navbar-expand {
+  @each $breakpoint in map-keys($grid-breakpoints) {
+    $next: breakpoint-next($breakpoint, $grid-breakpoints);
+    $infix: breakpoint-infix($next, $grid-breakpoints);
+
+    &#{$infix} {
+      @include media-breakpoint-down($breakpoint) {
+        %container-navbar-expand-#{$breakpoint} {
+          padding-right: 0;
+          padding-left: 0;
+        }
+
+        > .container,
+        > .container-fluid {
+          @extend %container-navbar-expand-#{$breakpoint};
+        }
+
+        @each $size, $container-max-width in $container-max-widths {
+          > .container#{breakpoint-infix($size, $container-max-widths)} {
+            @extend %container-navbar-expand-#{$breakpoint};
+          }
+        }
+      }
+
+      @include media-breakpoint-up($next) {
+        flex-flow: row nowrap;
+        justify-content: flex-start;
+
+        .navbar-nav {
+          flex-direction: row;
+
+          .dropdown-menu {
+            position: absolute;
+          }
+
+          .nav-link {
+            padding-right: $navbar-nav-link-padding-x;
+            padding-left: $navbar-nav-link-padding-x;
+          }
+        }
+
+        // For nesting containers, have to redeclare for alignment purposes
+        %container-nesting-#{$breakpoint} {
+          flex-wrap: nowrap;
+        }
+
+        > .container,
+        > .container-fluid {
+          @extend %container-nesting-#{$breakpoint};
+        }
+
+        @each $size, $container-max-width in $container-max-widths {
+          > .container#{breakpoint-infix($size, $container-max-widths)} {
+            @extend %container-nesting-#{$breakpoint};
+          }
+        }
+
+        .navbar-collapse {
+          display: flex !important; // stylelint-disable-line declaration-no-important
+
+          // Changes flex-bases to auto because of an IE10 bug
+          flex-basis: auto;
+        }
+
+        .navbar-toggler {
+          display: none;
+        }
+      }
+    }
+  }
+}
+
+
+// Navbar themes
+//
+// Styles for switching between navbars with light or dark background.
+
+// Dark links against a light background
+.navbar-light {
+  .navbar-brand {
+    color: $navbar-light-brand-color;
+
+    @include hover-focus() {
+      color: $navbar-light-brand-hover-color;
+    }
+  }
+
+  .navbar-nav {
+    .nav-link {
+      color: $navbar-light-color;
+
+      @include hover-focus() {
+        color: $navbar-light-hover-color;
+      }
+
+      &.disabled {
+        color: $navbar-light-disabled-color;
+      }
+    }
+
+    .show > .nav-link,
+    .active > .nav-link,
+    .nav-link.show,
+    .nav-link.active {
+      color: $navbar-light-active-color;
+    }
+  }
+
+  .navbar-toggler {
+    color: $navbar-light-color;
+    border-color: $navbar-light-toggler-border-color;
+  }
+
+  .navbar-toggler-icon {
+    background-image: escape-svg($navbar-light-toggler-icon-bg);
+  }
+
+  .navbar-text {
+    color: $navbar-light-color;
+    a {
+      color: $navbar-light-active-color;
+
+      @include hover-focus() {
+        color: $navbar-light-active-color;
+      }
+    }
+  }
+}
+
+// White links against a dark background
+.navbar-dark {
+  .navbar-brand {
+    color: $navbar-dark-brand-color;
+
+    @include hover-focus() {
+      color: $navbar-dark-brand-hover-color;
+    }
+  }
+
+  .navbar-nav {
+    .nav-link {
+      color: $navbar-dark-color;
+
+      @include hover-focus() {
+        color: $navbar-dark-hover-color;
+      }
+
+      &.disabled {
+        color: $navbar-dark-disabled-color;
+      }
+    }
+
+    .show > .nav-link,
+    .active > .nav-link,
+    .nav-link.show,
+    .nav-link.active {
+      color: $navbar-dark-active-color;
+    }
+  }
+
+  .navbar-toggler {
+    color: $navbar-dark-color;
+    border-color: $navbar-dark-toggler-border-color;
+  }
+
+  .navbar-toggler-icon {
+    background-image: escape-svg($navbar-dark-toggler-icon-bg);
+  }
+
+  .navbar-text {
+    color: $navbar-dark-color;
+    a {
+      color: $navbar-dark-active-color;
+
+      @include hover-focus() {
+        color: $navbar-dark-active-color;
+      }
+    }
+  }
+}

development/examples/example3/build/assets/sass/bootstrap/_pagination.scss

+.pagination {
+  display: flex;
+  @include list-unstyled();
+  @include border-radius();
+}
+
+.page-link {
+  position: relative;
+  display: block;
+  padding: $pagination-padding-y $pagination-padding-x;
+  margin-left: -$pagination-border-width;
+  line-height: $pagination-line-height;
+  color: $pagination-color;
+  text-decoration: if($link-decoration == none, null, none);
+  background-color: $pagination-bg;
+  border: $pagination-border-width solid $pagination-border-color;
+
+  &:hover {
+    z-index: 2;
+    color: $pagination-hover-color;
+    text-decoration: none;
+    background-color: $pagination-hover-bg;
+    border-color: $pagination-hover-border-color;
+  }
+
+  &:focus {
+    z-index: 3;
+    outline: $pagination-focus-outline;
+    box-shadow: $pagination-focus-box-shadow;
+  }
+}
+
+.page-item {
+  &:first-child {
+    .page-link {
+      margin-left: 0;
+      @include border-left-radius($border-radius);
+    }
+  }
+  &:last-child {
+    .page-link {
+      @include border-right-radius($border-radius);
+    }
+  }
+
+  &.active .page-link {
+    z-index: 3;
+    color: $pagination-active-color;
+    background-color: $pagination-active-bg;
+    border-color: $pagination-active-border-color;
+  }
+
+  &.disabled .page-link {
+    color: $pagination-disabled-color;
+    pointer-events: none;
+    // Opinionated: remove the "hand" cursor set previously for .page-link
+    cursor: auto;
+    background-color: $pagination-disabled-bg;
+    border-color: $pagination-disabled-border-color;
+  }
+}
+
+
+//
+// Sizing
+//
+
+.pagination-lg {
+  @include pagination-size($pagination-padding-y-lg, $pagination-padding-x-lg, $font-size-lg, $line-height-lg, $border-radius-lg);
+}
+
+.pagination-sm {
+  @include pagination-size($pagination-padding-y-sm, $pagination-padding-x-sm, $font-size-sm, $line-height-sm, $border-radius-sm);
+}

development/examples/example3/build/assets/sass/bootstrap/_popover.scss

+.popover {
+  position: absolute;
+  top: 0;
+  left: 0;
+  z-index: $zindex-popover;
+  display: block;
+  max-width: $popover-max-width;
+  // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
+  // So reset our font and text properties to avoid inheriting weird values.
+  @include reset-text();
+  @include font-size($popover-font-size);
+  // Allow breaking very long words so they don't overflow the popover's bounds
+  word-wrap: break-word;
+  background-color: $popover-bg;
+  background-clip: padding-box;
+  border: $popover-border-width solid $popover-border-color;
+  @include border-radius($popover-border-radius);
+  @include box-shadow($popover-box-shadow);
+
+  .arrow {
+    position: absolute;
+    display: block;
+    width: $popover-arrow-width;
+    height: $popover-arrow-height;
+    margin: 0 $popover-border-radius;
+
+    &::before,
+    &::after {
+      position: absolute;
+      display: block;
+      content: "";
+      border-color: transparent;
+      border-style: solid;
+    }
+  }
+}
+
+.bs-popover-top {
+  margin-bottom: $popover-arrow-height;
+
+  > .arrow {
+    bottom: subtract(-$popover-arrow-height, $popover-border-width);
+
+    &::before {
+      bottom: 0;
+      border-width: $popover-arrow-height ($popover-arrow-width / 2) 0;
+      border-top-color: $popover-arrow-outer-color;
+    }
+
+    &::after {
+      bottom: $popover-border-width;
+      border-width: $popover-arrow-height ($popover-arrow-width / 2) 0;
+      border-top-color: $popover-arrow-color;
+    }
+  }
+}
+
+.bs-popover-right {
+  margin-left: $popover-arrow-height;
+
+  > .arrow {
+    left: subtract(-$popover-arrow-height, $popover-border-width);
+    width: $popover-arrow-height;
+    height: $popover-arrow-width;
+    margin: $popover-border-radius 0; // make sure the arrow does not touch the popover's rounded corners
+
+    &::before {
+      left: 0;
+      border-width: ($popover-arrow-width / 2) $popover-arrow-height ($popover-arrow-width / 2) 0;
+      border-right-color: $popover-arrow-outer-color;
+    }
+
+    &::after {
+      left: $popover-border-width;
+      border-width: ($popover-arrow-width / 2) $popover-arrow-height ($popover-arrow-width / 2) 0;
+      border-right-color: $popover-arrow-color;
+    }
+  }
+}
+
+.bs-popover-bottom {
+  margin-top: $popover-arrow-height;
+
+  > .arrow {
+    top: subtract(-$popover-arrow-height, $popover-border-width);
+
+    &::before {
+      top: 0;
+      border-width: 0 ($popover-arrow-width / 2) $popover-arrow-height ($popover-arrow-width / 2);
+      border-bottom-color: $popover-arrow-outer-color;
+    }
+
+    &::after {
+      top: $popover-border-width;
+      border-width: 0 ($popover-arrow-width / 2) $popover-arrow-height ($popover-arrow-width / 2);
+      border-bottom-color: $popover-arrow-color;
+    }
+  }
+
+  // This will remove the popover-header's border just below the arrow
+  .popover-header::before {
+    position: absolute;
+    top: 0;
+    left: 50%;
+    display: block;
+    width: $popover-arrow-width;
+    margin-left: -$popover-arrow-width / 2;
+    content: "";
+    border-bottom: $popover-border-width solid $popover-header-bg;
+  }
+}
+
+.bs-popover-left {
+  margin-right: $popover-arrow-height;
+
+  > .arrow {
+    right: subtract(-$popover-arrow-height, $popover-border-width);
+    width: $popover-arrow-height;
+    height: $popover-arrow-width;
+    margin: $popover-border-radius 0; // make sure the arrow does not touch the popover's rounded corners
+
+    &::before {
+      right: 0;
+      border-width: ($popover-arrow-width / 2) 0 ($popover-arrow-width / 2) $popover-arrow-height;
+      border-left-color: $popover-arrow-outer-color;
+    }
+
+    &::after {
+      right: $popover-border-width;
+      border-width: ($popover-arrow-width / 2) 0 ($popover-arrow-width / 2) $popover-arrow-height;
+      border-left-color: $popover-arrow-color;
+    }
+  }
+}
+
+.bs-popover-auto {
+  &[x-placement^="top"] {
+    @extend .bs-popover-top;
+  }
+  &[x-placement^="right"] {
+    @extend .bs-popover-right;
+  }
+  &[x-placement^="bottom"] {
+    @extend .bs-popover-bottom;
+  }
+  &[x-placement^="left"] {
+    @extend .bs-popover-left;
+  }
+}
+
+
+// Offset the popover to account for the popover arrow
+.popover-header {
+  padding: $popover-header-padding-y $popover-header-padding-x;
+  margin-bottom: 0; // Reset the default from Reboot
+  @include font-size($font-size-base);
+  color: $popover-header-color;
+  background-color: $popover-header-bg;
+  border-bottom: $popover-border-width solid darken($popover-header-bg, 5%);
+  @include border-top-radius($popover-inner-border-radius);
+
+  &:empty {
+    display: none;
+  }
+}
+
+.popover-body {
+  padding: $popover-body-padding-y $popover-body-padding-x;
+  color: $popover-body-color;
+}

development/examples/example3/build/assets/sass/bootstrap/_print.scss

+// stylelint-disable declaration-no-important, selector-no-qualifying-type
+
+// Source: https://github.com/h5bp/main.css/blob/master/src/_print.css
+
+// ==========================================================================
+// Print styles.
+// Inlined to avoid the additional HTTP request:
+// https://www.phpied.com/delay-loading-your-print-css/
+// ==========================================================================
+
+@if $enable-print-styles {
+  @media print {
+    *,
+    *::before,
+    *::after {
+      // Bootstrap specific; comment out `color` and `background`
+      //color: $black !important; // Black prints faster
+      text-shadow: none !important;
+      //background: transparent !important;
+      box-shadow: none !important;
+    }
+
+    a {
+      &:not(.btn) {
+        text-decoration: underline;
+      }
+    }
+
+    // Bootstrap specific; comment the following selector out
+    //a[href]::after {
+    //  content: " (" attr(href) ")";
+    //}
+
+    abbr[title]::after {
+      content: " (" attr(title) ")";
+    }
+
+    // Bootstrap specific; comment the following selector out
+    //
+    // Don't show links that are fragment identifiers,
+    // or use the `javascript:` pseudo protocol
+    //
+
+    //a[href^="#"]::after,
+    //a[href^="javascript:"]::after {
+    // content: "";
+    //}
+
+    pre {
+      white-space: pre-wrap !important;
+    }
+    pre,
+    blockquote {
+      border: $border-width solid $gray-500; // Bootstrap custom code; using `$border-width` instead of 1px
+      page-break-inside: avoid;
+    }
+
+    //
+    // Printing Tables:
+    // https://web.archive.org/web/20180815150934/http://css-discuss.incutio.com/wiki/Printing_Tables
+    //
+
+    thead {
+      display: table-header-group;
+    }
+
+    tr,
+    img {
+      page-break-inside: avoid;
+    }
+
+    p,
+    h2,
+    h3 {
+      orphans: 3;
+      widows: 3;
+    }
+
+    h2,
+    h3 {
+      page-break-after: avoid;
+    }
+
+    // Bootstrap specific changes start
+
+    // Specify a size and min-width to make printing closer across browsers.
+    // We don't set margin here because it breaks `size` in Chrome. We also
+    // don't use `!important` on `size` as it breaks in Chrome.
+    @page {
+      size: $print-page-size;
+    }
+    body {
+      min-width: $print-body-min-width !important;
+    }
+    .container {
+      min-width: $print-body-min-width !important;
+    }
+
+    // Bootstrap components
+    .navbar {
+      display: none;
+    }
+    .badge {
+      border: $border-width solid $black;
+    }
+
+    .table {
+      border-collapse: collapse !important;
+
+      td,
+      th {
+        background-color: $white !important;
+      }
+    }
+
+    .table-bordered {
+      th,
+      td {
+        border: 1px solid $gray-300 !important;
+      }
+    }
+
+    .table-dark {
+      color: inherit;
+
+      th,
+      td,
+      thead th,
+      tbody + tbody {
+        border-color: $table-border-color;
+      }
+    }
+
+    .table .thead-dark th {
+      color: inherit;
+      border-color: $table-border-color;
+    }
+
+    // Bootstrap specific changes end
+  }
+}

development/examples/example3/build/assets/sass/bootstrap/_progress.scss

+// Disable animation if transitions are disabled
+@if $enable-transitions {
+  @keyframes progress-bar-stripes {
+    from { background-position: $progress-height 0; }
+    to { background-position: 0 0; }
+  }
+}
+
+.progress {
+  display: flex;
+  height: $progress-height;
+  overflow: hidden; // force rounded corners by cropping it
+  line-height: 0;
+  @include font-size($progress-font-size);
+  background-color: $progress-bg;
+  @include border-radius($progress-border-radius);
+  @include box-shadow($progress-box-shadow);
+}
+
+.progress-bar {
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  overflow: hidden;
+  color: $progress-bar-color;
+  text-align: center;
+  white-space: nowrap;
+  background-color: $progress-bar-bg;
+  @include transition($progress-bar-transition);
+}
+
+.progress-bar-striped {
+  @include gradient-striped();
+  background-size: $progress-height $progress-height;
+}
+
+@if $enable-transitions {
+  .progress-bar-animated {
+    animation: progress-bar-stripes $progress-bar-animation-timing;
+
+    @if $enable-prefers-reduced-motion-media-query {
+      @media (prefers-reduced-motion: reduce) {
+        animation: none;
+      }
+    }
+  }
+}

development/examples/example3/build/assets/sass/bootstrap/_reboot.scss

+// stylelint-disable at-rule-no-vendor-prefix, declaration-no-important, selector-no-qualifying-type, property-no-vendor-prefix
+
+// Reboot
+//
+// Normalization of HTML elements, manually forked from Normalize.css to remove
+// styles targeting irrelevant browsers while applying new styles.
+//
+// Normalize is licensed MIT. https://github.com/necolas/normalize.css
+
+
+// Document
+//
+// 1. Change from `box-sizing: content-box` so that `width` is not affected by `padding` or `border`.
+// 2. Change the default font family in all browsers.
+// 3. Correct the line height in all browsers.
+// 4. Prevent adjustments of font size after orientation changes in IE on Windows Phone and in iOS.
+// 5. Change the default tap highlight to be completely transparent in iOS.
+
+*,
+*::before,
+*::after {
+  box-sizing: border-box; // 1
+}
+
+html {
+  font-family: sans-serif; // 2
+  line-height: 1.15; // 3
+  -webkit-text-size-adjust: 100%; // 4
+  -webkit-tap-highlight-color: rgba($black, 0); // 5
+}
+
+// Shim for "new" HTML5 structural elements to display correctly (IE10, older browsers)
+// TODO: remove in v5
+// stylelint-disable-next-line selector-list-comma-newline-after
+article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
+  display: block;
+}
+
+// Body
+//
+// 1. Remove the margin in all browsers.
+// 2. As a best practice, apply a default `background-color`.
+// 3. Set an explicit initial text-align value so that we can later use
+//    the `inherit` value on things like `<th>` elements.
+
+body {
+  margin: 0; // 1
+  font-family: $font-family-base;
+  @include font-size($font-size-base);
+  font-weight: $font-weight-base;
+  line-height: $line-height-base;
+  color: $body-color;
+  text-align: left; // 3
+  background-color: $body-bg; // 2
+}
+
+// Future-proof rule: in browsers that support :focus-visible, suppress the focus outline
+// on elements that programmatically receive focus but wouldn't normally show a visible
+// focus outline. In general, this would mean that the outline is only applied if the
+// interaction that led to the element receiving programmatic focus was a keyboard interaction,
+// or the browser has somehow determined that the user is primarily a keyboard user and/or
+// wants focus outlines to always be presented.
+//
+// See https://developer.mozilla.org/en-US/docs/Web/CSS/:focus-visible
+// and https://developer.paciellogroup.com/blog/2018/03/focus-visible-and-backwards-compatibility/
+[tabindex="-1"]:focus:not(:focus-visible) {
+  outline: 0 !important;
+}
+
+
+// Content grouping
+//
+// 1. Add the correct box sizing in Firefox.
+// 2. Show the overflow in Edge and IE.
+
+hr {
+  box-sizing: content-box; // 1
+  height: 0; // 1
+  overflow: visible; // 2
+}
+
+
+//
+// Typography
+//
+
+// Remove top margins from headings
+//
+// By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top
+// margin for easier control within type scales as it avoids margin collapsing.
+// stylelint-disable-next-line selector-list-comma-newline-after
+h1, h2, h3, h4, h5, h6 {
+  margin-top: 0;
+  margin-bottom: $headings-margin-bottom;
+}
+
+// Reset margins on paragraphs
+//
+// Similarly, the top margin on `<p>`s get reset. However, we also reset the
+// bottom margin to use `rem` units instead of `em`.
+p {
+  margin-top: 0;
+  margin-bottom: $paragraph-margin-bottom;
+}
+
+// Abbreviations
+//
+// 1. Duplicate behavior to the data-* attribute for our tooltip plugin
+// 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
+// 3. Add explicit cursor to indicate changed behavior.
+// 4. Remove the bottom border in Firefox 39-.
+// 5. Prevent the text-decoration to be skipped.
+
+abbr[title],
+abbr[data-original-title] { // 1
+  text-decoration: underline; // 2
+  text-decoration: underline dotted; // 2
+  cursor: help; // 3
+  border-bottom: 0; // 4
+  text-decoration-skip-ink: none; // 5
+}
+
+address {
+  margin-bottom: 1rem;
+  font-style: normal;
+  line-height: inherit;
+}
+
+ol,
+ul,
+dl {
+  margin-top: 0;
+  margin-bottom: 1rem;
+}
+
+ol ol,
+ul ul,
+ol ul,
+ul ol {
+  margin-bottom: 0;
+}
+
+dt {
+  font-weight: $dt-font-weight;
+}
+
+dd {
+  margin-bottom: .5rem;
+  margin-left: 0; // Undo browser default
+}
+
+blockquote {
+  margin: 0 0 1rem;
+}
+
+b,
+strong {
+  font-weight: $font-weight-bolder; // Add the correct font weight in Chrome, Edge, and Safari
+}
+
+small {
+  @include font-size(80%); // Add the correct font size in all browsers
+}
+
+//
+// Prevent `sub` and `sup` elements from affecting the line height in
+// all browsers.
+//
+
+sub,
+sup {
+  position: relative;
+  @include font-size(75%);
+  line-height: 0;
+  vertical-align: baseline;
+}
+
+sub { bottom: -.25em; }
+sup { top: -.5em; }
+
+
+//
+// Links
+//
+
+a {
+  color: $link-color;
+  text-decoration: $link-decoration;
+  background-color: transparent; // Remove the gray background on active links in IE 10.
+
+  @include hover() {
+    color: $link-hover-color;
+    text-decoration: $link-hover-decoration;
+  }
+}
+
+// And undo these styles for placeholder links/named anchors (without href).
+// It would be more straightforward to just use a[href] in previous block, but that
+// causes specificity issues in many other styles that are too complex to fix.
+// See https://github.com/twbs/bootstrap/issues/19402
+
+a:not([href]):not([class]) {
+  color: inherit;
+  text-decoration: none;
+
+  @include hover() {
+    color: inherit;
+    text-decoration: none;
+  }
+}
+
+
+//
+// Code
+//
+
+pre,
+code,
+kbd,
+samp {
+  font-family: $font-family-monospace;
+  @include font-size(1em); // Correct the odd `em` font sizing in all browsers.
+}
+
+pre {
+  // Remove browser default top margin
+  margin-top: 0;
+  // Reset browser default of `1em` to use `rem`s
+  margin-bottom: 1rem;
+  // Don't allow content to break outside
+  overflow: auto;
+  // Disable auto-hiding scrollbar in IE & legacy Edge to avoid overlap,
+  // making it impossible to interact with the content
+  -ms-overflow-style: scrollbar;
+}
+
+
+//
+// Figures
+//
+
+figure {
+  // Apply a consistent margin strategy (matches our type styles).
+  margin: 0 0 1rem;
+}
+
+
+//
+// Images and content
+//
+
+img {
+  vertical-align: middle;
+  border-style: none; // Remove the border on images inside links in IE 10-.
+}
+
+svg {
+  // Workaround for the SVG overflow bug in IE10/11 is still required.
+  // See https://github.com/twbs/bootstrap/issues/26878
+  overflow: hidden;
+  vertical-align: middle;
+}
+
+
+//
+// Tables
+//
+
+table {
+  border-collapse: collapse; // Prevent double borders
+}
+
+caption {
+  padding-top: $table-cell-padding;
+  padding-bottom: $table-cell-padding;
+  color: $table-caption-color;
+  text-align: left;
+  caption-side: bottom;
+}
+
+th {
+  // Matches default `<td>` alignment by inheriting from the `<body>`, or the
+  // closest parent with a set `text-align`.
+  text-align: inherit;
+}
+
+
+//
+// Forms
+//
+
+label {
+  // Allow labels to use `margin` for spacing.
+  display: inline-block;
+  margin-bottom: $label-margin-bottom;
+}
+
+// Remove the default `border-radius` that macOS Chrome adds.
+//
+// Details at https://github.com/twbs/bootstrap/issues/24093
+button {
+  // stylelint-disable-next-line property-blacklist
+  border-radius: 0;
+}
+
+// Work around a Firefox/IE bug where the transparent `button` background
+// results in a loss of the default `button` focus styles.
+//
+// Credit: https://github.com/suitcss/base/
+button:focus {
+  outline: 1px dotted;
+  outline: 5px auto -webkit-focus-ring-color;
+}
+
+input,
+button,
+select,
+optgroup,
+textarea {
+  margin: 0; // Remove the margin in Firefox and Safari
+  font-family: inherit;
+  @include font-size(inherit);
+  line-height: inherit;
+}
+
+button,
+input {
+  overflow: visible; // Show the overflow in Edge
+}
+
+button,
+select {
+  text-transform: none; // Remove the inheritance of text transform in Firefox
+}
+
+// Set the cursor for non-`<button>` buttons
+//
+// Details at https://github.com/twbs/bootstrap/pull/30562
+[role="button"] {
+  cursor: pointer;
+}
+
+// Remove the inheritance of word-wrap in Safari.
+//
+// Details at https://github.com/twbs/bootstrap/issues/24990
+select {
+  word-wrap: normal;
+}
+
+
+// 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
+//    controls in Android 4.
+// 2. Correct the inability to style clickable types in iOS and Safari.
+button,
+[type="button"], // 1
+[type="reset"],
+[type="submit"] {
+  -webkit-appearance: button; // 2
+}
+
+// Opinionated: add "hand" cursor to non-disabled button elements.
+@if $enable-pointer-cursor-for-buttons {
+  button,
+  [type="button"],
+  [type="reset"],
+  [type="submit"] {
+    &:not(:disabled) {
+      cursor: pointer;
+    }
+  }
+}
+
+// Remove inner border and padding from Firefox, but don't restore the outline like Normalize.
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  padding: 0;
+  border-style: none;
+}
+
+input[type="radio"],
+input[type="checkbox"] {
+  box-sizing: border-box; // 1. Add the correct box sizing in IE 10-
+  padding: 0; // 2. Remove the padding in IE 10-
+}
+
+
+textarea {
+  overflow: auto; // Remove the default vertical scrollbar in IE.
+  // Textareas should really only resize vertically so they don't break their (horizontal) containers.
+  resize: vertical;
+}
+
+fieldset {
+  // Browsers set a default `min-width: min-content;` on fieldsets,
+  // unlike e.g. `<div>`s, which have `min-width: 0;` by default.
+  // So we reset that to ensure fieldsets behave more like a standard block element.
+  // See https://github.com/twbs/bootstrap/issues/12359
+  // and https://html.spec.whatwg.org/multipage/#the-fieldset-and-legend-elements
+  min-width: 0;
+  // Reset the default outline behavior of fieldsets so they don't affect page layout.
+  padding: 0;
+  margin: 0;
+  border: 0;
+}
+
+// 1. Correct the text wrapping in Edge and IE.
+// 2. Correct the color inheritance from `fieldset` elements in IE.
+legend {
+  display: block;
+  width: 100%;
+  max-width: 100%; // 1
+  padding: 0;
+  margin-bottom: .5rem;
+  @include font-size(1.5rem);
+  line-height: inherit;
+  color: inherit; // 2
+  white-space: normal; // 1
+}
+
+progress {
+  vertical-align: baseline; // Add the correct vertical alignment in Chrome, Firefox, and Opera.
+}
+
+// Correct the cursor style of increment and decrement buttons in Chrome.
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
+  height: auto;
+}
+
+[type="search"] {
+  // This overrides the extra rounded corners on search inputs in iOS so that our
+  // `.form-control` class can properly style them. Note that this cannot simply
+  // be added to `.form-control` as it's not specific enough. For details, see
+  // https://github.com/twbs/bootstrap/issues/11586.
+  outline-offset: -2px; // 2. Correct the outline style in Safari.
+  -webkit-appearance: none;
+}
+
+//
+// Remove the inner padding in Chrome and Safari on macOS.
+//
+
+[type="search"]::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+//
+// 1. Correct the inability to style clickable types in iOS and Safari.
+// 2. Change font properties to `inherit` in Safari.
+//
+
+::-webkit-file-upload-button {
+  font: inherit; // 2
+  -webkit-appearance: button; // 1
+}
+
+//
+// Correct element displays
+//
+
+output {
+  display: inline-block;
+}
+
+summary {
+  display: list-item; // Add the correct display in all browsers
+  cursor: pointer;
+}
+
+template {
+  display: none; // Add the correct display in IE
+}
+
+// Always hide an element with the `hidden` HTML attribute (from PureCSS).
+// Needed for proper display in IE 10-.
+[hidden] {
+  display: none !important;
+}

development/examples/example3/build/assets/sass/bootstrap/_root.scss

+// Do not forget to update getting-started/theming.md!
+:root {
+  // Custom variable values only support SassScript inside `#{}`.
+  @each $color, $value in $colors {
+    --#{$color}: #{$value};
+  }
+
+  @each $color, $value in $theme-colors {
+    --#{$color}: #{$value};
+  }
+
+  @each $bp, $value in $grid-breakpoints {
+    --breakpoint-#{$bp}: #{$value};
+  }
+
+  // Use `inspect` for lists so that quoted items keep the quotes.
+  // See https://github.com/sass/sass/issues/2383#issuecomment-336349172
+  --font-family-sans-serif: #{inspect($font-family-sans-serif)};
+  --font-family-monospace: #{inspect($font-family-monospace)};
+}

development/examples/example3/build/assets/sass/bootstrap/_spinners.scss

+//
+// Rotating border
+//
+
+@keyframes spinner-border {
+  to { transform: rotate(360deg); }
+}
+
+.spinner-border {
+  display: inline-block;
+  width: $spinner-width;
+  height: $spinner-height;
+  vertical-align: text-bottom;
+  border: $spinner-border-width solid currentColor;
+  border-right-color: transparent;
+  // stylelint-disable-next-line property-blacklist
+  border-radius: 50%;
+  animation: spinner-border .75s linear infinite;
+}
+
+.spinner-border-sm {
+  width: $spinner-width-sm;
+  height: $spinner-height-sm;
+  border-width: $spinner-border-width-sm;
+}
+
+//
+// Growing circle
+//
+
+@keyframes spinner-grow {
+  0% {
+    transform: scale(0);
+  }
+  50% {
+    opacity: 1;
+    transform: none;
+  }
+}
+
+.spinner-grow {
+  display: inline-block;
+  width: $spinner-width;
+  height: $spinner-height;
+  vertical-align: text-bottom;
+  background-color: currentColor;
+  // stylelint-disable-next-line property-blacklist
+  border-radius: 50%;
+  opacity: 0;
+  animation: spinner-grow .75s linear infinite;
+}
+
+.spinner-grow-sm {
+  width: $spinner-width-sm;
+  height: $spinner-height-sm;
+}

development/examples/example3/build/assets/sass/bootstrap/_tables.scss

+//
+// Basic Bootstrap table
+//
+
+.table {
+  width: 100%;
+  margin-bottom: $spacer;
+  color: $table-color;
+  background-color: $table-bg; // Reset for nesting within parents with `background-color`.
+
+  th,
+  td {
+    padding: $table-cell-padding;
+    vertical-align: top;
+    border-top: $table-border-width solid $table-border-color;
+  }
+
+  thead th {
+    vertical-align: bottom;
+    border-bottom: (2 * $table-border-width) solid $table-border-color;
+  }
+
+  tbody + tbody {
+    border-top: (2 * $table-border-width) solid $table-border-color;
+  }
+}
+
+
+//
+// Condensed table w/ half padding
+//
+
+.table-sm {
+  th,
+  td {
+    padding: $table-cell-padding-sm;
+  }
+}
+
+
+// Border versions
+//
+// Add or remove borders all around the table and between all the columns.
+
+.table-bordered {
+  border: $table-border-width solid $table-border-color;
+
+  th,
+  td {
+    border: $table-border-width solid $table-border-color;
+  }
+
+  thead {
+    th,
+    td {
+      border-bottom-width: 2 * $table-border-width;
+    }
+  }
+}
+
+.table-borderless {
+  th,
+  td,
+  thead th,
+  tbody + tbody {
+    border: 0;
+  }
+}
+
+// Zebra-striping
+//
+// Default zebra-stripe styles (alternating gray and transparent backgrounds)
+
+.table-striped {
+  tbody tr:nth-of-type(#{$table-striped-order}) {
+    background-color: $table-accent-bg;
+  }
+}
+
+
+// Hover effect
+//
+// Placed here since it has to come after the potential zebra striping
+
+.table-hover {
+  tbody tr {
+    @include hover() {
+      color: $table-hover-color;
+      background-color: $table-hover-bg;
+    }
+  }
+}
+
+
+// Table backgrounds
+//
+// Exact selectors below required to override `.table-striped` and prevent
+// inheritance to nested tables.
+
+@each $color, $value in $theme-colors {
+  @include table-row-variant($color, theme-color-level($color, $table-bg-level), theme-color-level($color, $table-border-level));
+}
+
+@include table-row-variant(active, $table-active-bg);
+
+
+// Dark styles
+//
+// Same table markup, but inverted color scheme: dark background and light text.
+
+// stylelint-disable-next-line no-duplicate-selectors
+.table {
+  .thead-dark {
+    th {
+      color: $table-dark-color;
+      background-color: $table-dark-bg;
+      border-color: $table-dark-border-color;
+    }
+  }
+
+  .thead-light {
+    th {
+      color: $table-head-color;
+      background-color: $table-head-bg;
+      border-color: $table-border-color;
+    }
+  }
+}
+
+.table-dark {
+  color: $table-dark-color;
+  background-color: $table-dark-bg;
+
+  th,
+  td,
+  thead th {
+    border-color: $table-dark-border-color;
+  }
+
+  &.table-bordered {
+    border: 0;
+  }
+
+  &.table-striped {
+    tbody tr:nth-of-type(#{$table-striped-order}) {
+      background-color: $table-dark-accent-bg;
+    }
+  }
+
+  &.table-hover {
+    tbody tr {
+      @include hover() {
+        color: $table-dark-hover-color;
+        background-color: $table-dark-hover-bg;
+      }
+    }
+  }
+}
+
+
+// Responsive tables
+//
+// Generate series of `.table-responsive-*` classes for configuring the screen
+// size of where your table will overflow.
+
+.table-responsive {
+  @each $breakpoint in map-keys($grid-breakpoints) {
+    $next: breakpoint-next($breakpoint, $grid-breakpoints);
+    $infix: breakpoint-infix($next, $grid-breakpoints);
+
+    &#{$infix} {
+      @include media-breakpoint-down($breakpoint) {
+        display: block;
+        width: 100%;
+        overflow-x: auto;
+        -webkit-overflow-scrolling: touch;
+
+        // Prevent double border on horizontal scroll due to use of `display: block;`
+        > .table-bordered {
+          border: 0;
+        }
+      }
+    }
+  }
+}

development/examples/example3/build/assets/sass/bootstrap/_toasts.scss

+.toast {
+  // Prevents from shrinking in IE11, when in a flex container
+  // See https://github.com/twbs/bootstrap/issues/28341
+  flex-basis: $toast-max-width;
+  max-width: $toast-max-width;
+  @include font-size($toast-font-size);
+  color: $toast-color;
+  background-color: $toast-background-color;
+  background-clip: padding-box;
+  border: $toast-border-width solid $toast-border-color;
+  box-shadow: $toast-box-shadow;
+  opacity: 0;
+  @include border-radius($toast-border-radius);
+
+  &:not(:last-child) {
+    margin-bottom: $toast-padding-x;
+  }
+
+  &.showing {
+    opacity: 1;
+  }
+
+  &.show {
+    display: block;
+    opacity: 1;
+  }
+
+  &.hide {
+    display: none;
+  }
+}
+
+.toast-header {
+  display: flex;
+  align-items: center;
+  padding: $toast-padding-y $toast-padding-x;
+  color: $toast-header-color;
+  background-color: $toast-header-background-color;
+  background-clip: padding-box;
+  border-bottom: $toast-border-width solid $toast-header-border-color;
+  @include border-top-radius(subtract($toast-border-radius, $toast-border-width));
+}
+
+.toast-body {
+  padding: $toast-padding-x; // apply to both vertical and horizontal
+}

development/examples/example3/build/assets/sass/bootstrap/_tooltip.scss

+// Base class
+.tooltip {
+  position: absolute;
+  z-index: $zindex-tooltip;
+  display: block;
+  margin: $tooltip-margin;
+  // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
+  // So reset our font and text properties to avoid inheriting weird values.
+  @include reset-text();
+  @include font-size($tooltip-font-size);
+  // Allow breaking very long words so they don't overflow the tooltip's bounds
+  word-wrap: break-word;
+  opacity: 0;
+
+  &.show { opacity: $tooltip-opacity; }
+
+  .arrow {
+    position: absolute;
+    display: block;
+    width: $tooltip-arrow-width;
+    height: $tooltip-arrow-height;
+
+    &::before {
+      position: absolute;
+      content: "";
+      border-color: transparent;
+      border-style: solid;
+    }
+  }
+}
+
+.bs-tooltip-top {
+  padding: $tooltip-arrow-height 0;
+
+  .arrow {
+    bottom: 0;
+
+    &::before {
+      top: 0;
+      border-width: $tooltip-arrow-height ($tooltip-arrow-width / 2) 0;
+      border-top-color: $tooltip-arrow-color;
+    }
+  }
+}
+
+.bs-tooltip-right {
+  padding: 0 $tooltip-arrow-height;
+
+  .arrow {
+    left: 0;
+    width: $tooltip-arrow-height;
+    height: $tooltip-arrow-width;
+
+    &::before {
+      right: 0;
+      border-width: ($tooltip-arrow-width / 2) $tooltip-arrow-height ($tooltip-arrow-width / 2) 0;
+      border-right-color: $tooltip-arrow-color;
+    }
+  }
+}
+
+.bs-tooltip-bottom {
+  padding: $tooltip-arrow-height 0;
+
+  .arrow {
+    top: 0;
+
+    &::before {
+      bottom: 0;
+      border-width: 0 ($tooltip-arrow-width / 2) $tooltip-arrow-height;
+      border-bottom-color: $tooltip-arrow-color;
+    }
+  }
+}
+
+.bs-tooltip-left {
+  padding: 0 $tooltip-arrow-height;
+
+  .arrow {
+    right: 0;
+    width: $tooltip-arrow-height;
+    height: $tooltip-arrow-width;
+
+    &::before {
+      left: 0;
+      border-width: ($tooltip-arrow-width / 2) 0 ($tooltip-arrow-width / 2) $tooltip-arrow-height;
+      border-left-color: $tooltip-arrow-color;
+    }
+  }
+}
+
+.bs-tooltip-auto {
+  &[x-placement^="top"] {
+    @extend .bs-tooltip-top;
+  }
+  &[x-placement^="right"] {
+    @extend .bs-tooltip-right;
+  }
+  &[x-placement^="bottom"] {
+    @extend .bs-tooltip-bottom;
+  }
+  &[x-placement^="left"] {
+    @extend .bs-tooltip-left;
+  }
+}
+
+// Wrapper for the tooltip content
+.tooltip-inner {
+  max-width: $tooltip-max-width;
+  padding: $tooltip-padding-y $tooltip-padding-x;
+  color: $tooltip-color;
+  text-align: center;
+  background-color: $tooltip-bg;
+  @include border-radius($tooltip-border-radius);
+}

development/examples/example3/build/assets/sass/bootstrap/_transitions.scss

+.fade {
+  @include transition($transition-fade);
+
+  &:not(.show) {
+    opacity: 0;
+  }
+}
+
+.collapse {
+  &:not(.show) {
+    display: none;
+  }
+}
+
+.collapsing {
+  position: relative;
+  height: 0;
+  overflow: hidden;
+  @include transition($transition-collapse);
+}

development/examples/example3/build/assets/sass/bootstrap/_type.scss

+// stylelint-disable declaration-no-important, selector-list-comma-newline-after
+
+//
+// Headings
+//
+
+h1, h2, h3, h4, h5, h6,
+.h1, .h2, .h3, .h4, .h5, .h6 {
+  margin-bottom: $headings-margin-bottom;
+  font-family: $headings-font-family;
+  font-weight: $headings-font-weight;
+  line-height: $headings-line-height;
+  color: $headings-color;
+}
+
+h1, .h1 { @include font-size($h1-font-size); }
+h2, .h2 { @include font-size($h2-font-size); }
+h3, .h3 { @include font-size($h3-font-size); }
+h4, .h4 { @include font-size($h4-font-size); }
+h5, .h5 { @include font-size($h5-font-size); }
+h6, .h6 { @include font-size($h6-font-size); }
+
+.lead {
+  @include font-size($lead-font-size);
+  font-weight: $lead-font-weight;
+}
+
+// Type display classes
+.display-1 {
+  @include font-size($display1-size);
+  font-weight: $display1-weight;
+  line-height: $display-line-height;
+}
+.display-2 {
+  @include font-size($display2-size);
+  font-weight: $display2-weight;
+  line-height: $display-line-height;
+}
+.display-3 {
+  @include font-size($display3-size);
+  font-weight: $display3-weight;
+  line-height: $display-line-height;
+}
+.display-4 {
+  @include font-size($display4-size);
+  font-weight: $display4-weight;
+  line-height: $display-line-height;
+}
+
+
+//
+// Horizontal rules
+//
+
+hr {
+  margin-top: $hr-margin-y;
+  margin-bottom: $hr-margin-y;
+  border: 0;
+  border-top: $hr-border-width solid $hr-border-color;
+}
+
+
+//
+// Emphasis
+//
+
+small,
+.small {
+  @include font-size($small-font-size);
+  font-weight: $font-weight-normal;
+}
+
+mark,
+.mark {
+  padding: $mark-padding;
+  background-color: $mark-bg;
+}
+
+
+//
+// Lists
+//
+
+.list-unstyled {
+  @include list-unstyled();
+}
+
+// Inline turns list items into inline-block
+.list-inline {
+  @include list-unstyled();
+}
+.list-inline-item {
+  display: inline-block;
+
+  &:not(:last-child) {
+    margin-right: $list-inline-padding;
+  }
+}
+
+
+//
+// Misc
+//
+
+// Builds on `abbr`
+.initialism {
+  @include font-size(90%);
+  text-transform: uppercase;
+}
+
+// Blockquotes
+.blockquote {
+  margin-bottom: $spacer;
+  @include font-size($blockquote-font-size);
+}
+
+.blockquote-footer {
+  display: block;
+  @include font-size($blockquote-small-font-size);
+  color: $blockquote-small-color;
+
+  &::before {
+    content: "\2014\00A0"; // em dash, nbsp
+  }
+}

development/examples/example3/build/assets/sass/bootstrap/_utilities.scss

+@import "utilities/align";
+@import "utilities/background";
+@import "utilities/borders";
+@import "utilities/clearfix";
+@import "utilities/display";
+@import "utilities/embed";
+@import "utilities/flex";
+@import "utilities/float";
+@import "utilities/interactions";
+@import "utilities/overflow";
+@import "utilities/position";
+@import "utilities/screenreaders";
+@import "utilities/shadows";
+@import "utilities/sizing";
+@import "utilities/spacing";
+@import "utilities/stretched-link";
+@import "utilities/text";
+@import "utilities/visibility";

development/examples/example3/build/assets/sass/bootstrap/_variables.scss

+// Variables
+//
+// Variables should follow the `$component-state-property-size` formula for
+// consistent naming. Ex: $nav-link-disabled-color and $modal-content-box-shadow-xs.
+
+// Color system
+
+$white:    #fff !default;
+$gray-100: #f8f9fa !default;
+$gray-200: #e9ecef !default;
+$gray-300: #dee2e6 !default;
+$gray-400: #ced4da !default;
+$gray-500: #adb5bd !default;
+$gray-600: #6c757d !default;
+$gray-700: #495057 !default;
+$gray-800: #343a40 !default;
+$gray-900: #212529 !default;
+$black:    #000 !default;
+
+$grays: () !default;
+$grays: map-merge(
+  (
+    "100": $gray-100,
+    "200": $gray-200,
+    "300": $gray-300,
+    "400": $gray-400,
+    "500": $gray-500,
+    "600": $gray-600,
+    "700": $gray-700,
+    "800": $gray-800,
+    "900": $gray-900
+  ),
+  $grays
+);
+
+$blue:    #007bff !default;
+$indigo:  #6610f2 !default;
+$purple:  #6f42c1 !default;
+$pink:    #e83e8c !default;
+$red:     #dc3545 !default;
+$orange:  #fd7e14 !default;
+$yellow:  #ffc107 !default;
+$green:   #28a745 !default;
+$teal:    #20c997 !default;
+$cyan:    #17a2b8 !default;
+
+$colors: () !default;
+$colors: map-merge(
+  (
+    "blue":       $blue,
+    "indigo":     $indigo,
+    "purple":     $purple,
+    "pink":       $pink,
+    "red":        $red,
+    "orange":     $orange,
+    "yellow":     $yellow,
+    "green":      $green,
+    "teal":       $teal,
+    "cyan":       $cyan,
+    "white":      $white,
+    "gray":       $gray-600,
+    "gray-dark":  $gray-800
+  ),
+  $colors
+);
+
+$primary:       $blue !default;
+$secondary:     $gray-600 !default;
+$success:       $green !default;
+$info:          $cyan !default;
+$warning:       $yellow !default;
+$danger:        $red !default;
+$light:         $gray-100 !default;
+$dark:          $gray-800 !default;
+
+$theme-colors: () !default;
+$theme-colors: map-merge(
+  (
+    "primary":    $primary,
+    "secondary":  $secondary,
+    "success":    $success,
+    "info":       $info,
+    "warning":    $warning,
+    "danger":     $danger,
+    "light":      $light,
+    "dark":       $dark
+  ),
+  $theme-colors
+);
+
+// Set a specific jump point for requesting color jumps
+$theme-color-interval:      8% !default;
+
+// The yiq lightness value that determines when the lightness of color changes from "dark" to "light". Acceptable values are between 0 and 255.
+$yiq-contrasted-threshold:  150 !default;
+
+// Customize the light and dark text colors for use in our YIQ color contrast function.
+$yiq-text-dark:             $gray-900 !default;
+$yiq-text-light:            $white !default;
+
+// Characters which are escaped by the escape-svg function
+$escaped-characters: (
+  ("<", "%3c"),
+  (">", "%3e"),
+  ("#", "%23"),
+  ("(", "%28"),
+  (")", "%29"),
+) !default;
+
+
+// Options
+//
+// Quickly modify global styling by enabling or disabling optional features.
+
+$enable-caret:                                true !default;
+$enable-rounded:                              true !default;
+$enable-shadows:                              false !default;
+$enable-gradients:                            false !default;
+$enable-transitions:                          true !default;
+$enable-prefers-reduced-motion-media-query:   true !default;
+$enable-hover-media-query:                    false !default; // Deprecated, no longer affects any compiled CSS
+$enable-grid-classes:                         true !default;
+$enable-pointer-cursor-for-buttons:           true !default;
+$enable-print-styles:                         true !default;
+$enable-responsive-font-sizes:                false !default;
+$enable-validation-icons:                     true !default;
+$enable-deprecation-messages:                 true !default;
+
+
+// Spacing
+//
+// Control the default styling of most Bootstrap elements by modifying these
+// variables. Mostly focused on spacing.
+// You can add more entries to the $spacers map, should you need more variation.
+
+$spacer: 1rem !default;
+$spacers: () !default;
+$spacers: map-merge(
+  (
+    0: 0,
+    1: ($spacer * .25),
+    2: ($spacer * .5),
+    3: $spacer,
+    4: ($spacer * 1.5),
+    5: ($spacer * 3)
+  ),
+  $spacers
+);
+
+// This variable affects the `.h-*` and `.w-*` classes.
+$sizes: () !default;
+$sizes: map-merge(
+  (
+    25: 25%,
+    50: 50%,
+    75: 75%,
+    100: 100%,
+    auto: auto
+  ),
+  $sizes
+);
+
+
+// Body
+//
+// Settings for the `<body>` element.
+
+$body-bg:                   $white !default;
+$body-color:                $gray-900 !default;
+
+
+// Links
+//
+// Style anchor elements.
+
+$link-color:                              theme-color("primary") !default;
+$link-decoration:                         none !default;
+$link-hover-color:                        darken($link-color, 15%) !default;
+$link-hover-decoration:                   underline !default;
+// Darken percentage for links with `.text-*` class (e.g. `.text-success`)
+$emphasized-link-hover-darken-percentage: 15% !default;
+
+// Paragraphs
+//
+// Style p element.
+
+$paragraph-margin-bottom:   1rem !default;
+
+
+// Grid breakpoints
+//
+// Define the minimum dimensions at which your layout will change,
+// adapting to different screen sizes, for use in media queries.
+
+$grid-breakpoints: (
+  xs: 0,
+  sm: 576px,
+  md: 768px,
+  lg: 992px,
+  xl: 1200px
+) !default;
+
+@include _assert-ascending($grid-breakpoints, "$grid-breakpoints");
+@include _assert-starts-at-zero($grid-breakpoints, "$grid-breakpoints");
+
+
+// Grid containers
+//
+// Define the maximum width of `.container` for different screen sizes.
+
+$container-max-widths: (
+  sm: 540px,
+  md: 720px,
+  lg: 960px,
+  xl: 1140px
+) !default;
+
+@include _assert-ascending($container-max-widths, "$container-max-widths");
+
+
+// Grid columns
+//
+// Set the number of columns and specify the width of the gutters.
+
+$grid-columns:                12 !default;
+$grid-gutter-width:           30px !default;
+$grid-row-columns:            6 !default;
+
+
+// Components
+//
+// Define common padding and border radius sizes and more.
+
+$line-height-lg:              1.5 !default;
+$line-height-sm:              1.5 !default;
+
+$border-width:                1px !default;
+$border-color:                $gray-300 !default;
+
+$border-radius:               .25rem !default;
+$border-radius-lg:            .3rem !default;
+$border-radius-sm:            .2rem !default;
+
+$rounded-pill:                50rem !default;
+
+$box-shadow-sm:               0 .125rem .25rem rgba($black, .075) !default;
+$box-shadow:                  0 .5rem 1rem rgba($black, .15) !default;
+$box-shadow-lg:               0 1rem 3rem rgba($black, .175) !default;
+
+$component-active-color:      $white !default;
+$component-active-bg:         theme-color("primary") !default;
+
+$caret-width:                 .3em !default;
+$caret-vertical-align:        $caret-width * .85 !default;
+$caret-spacing:               $caret-width * .85 !default;
+
+$transition-base:             all .2s ease-in-out !default;
+$transition-fade:             opacity .15s linear !default;
+$transition-collapse:         height .35s ease !default;
+
+$embed-responsive-aspect-ratios: () !default;
+$embed-responsive-aspect-ratios: join(
+  (
+    (21 9),
+    (16 9),
+    (4 3),
+    (1 1),
+  ),
+  $embed-responsive-aspect-ratios
+);
+
+// Typography
+//
+// Font, line-height, and color for body text, headings, and more.
+
+// stylelint-disable value-keyword-case
+$font-family-sans-serif:      -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji" !default;
+$font-family-monospace:       SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace !default;
+$font-family-base:            $font-family-sans-serif !default;
+// stylelint-enable value-keyword-case
+
+$font-size-base:              1rem !default; // Assumes the browser default, typically `16px`
+$font-size-lg:                $font-size-base * 1.25 !default;
+$font-size-sm:                $font-size-base * .875 !default;
+
+$font-weight-lighter:         lighter !default;
+$font-weight-light:           300 !default;
+$font-weight-normal:          400 !default;
+$font-weight-bold:            700 !default;
+$font-weight-bolder:          bolder !default;
+
+$font-weight-base:            $font-weight-normal !default;
+$line-height-base:            1.5 !default;
+
+$h1-font-size:                $font-size-base * 2.5 !default;
+$h2-font-size:                $font-size-base * 2 !default;
+$h3-font-size:                $font-size-base * 1.75 !default;
+$h4-font-size:                $font-size-base * 1.5 !default;
+$h5-font-size:                $font-size-base * 1.25 !default;
+$h6-font-size:                $font-size-base !default;
+
+$headings-margin-bottom:      $spacer / 2 !default;
+$headings-font-family:        null !default;
+$headings-font-weight:        500 !default;
+$headings-line-height:        1.2 !default;
+$headings-color:              null !default;
+
+$display1-size:               6rem !default;
+$display2-size:               5.5rem !default;
+$display3-size:               4.5rem !default;
+$display4-size:               3.5rem !default;
+
+$display1-weight:             300 !default;
+$display2-weight:             300 !default;
+$display3-weight:             300 !default;
+$display4-weight:             300 !default;
+$display-line-height:         $headings-line-height !default;
+
+$lead-font-size:              $font-size-base * 1.25 !default;
+$lead-font-weight:            300 !default;
+
+$small-font-size:             80% !default;
+
+$text-muted:                  $gray-600 !default;
+
+$blockquote-small-color:      $gray-600 !default;
+$blockquote-small-font-size:  $small-font-size !default;
+$blockquote-font-size:        $font-size-base * 1.25 !default;
+
+$hr-border-color:             rgba($black, .1) !default;
+$hr-border-width:             $border-width !default;
+
+$mark-padding:                .2em !default;
+
+$dt-font-weight:              $font-weight-bold !default;
+
+$kbd-box-shadow:              inset 0 -.1rem 0 rgba($black, .25) !default;
+$nested-kbd-font-weight:      $font-weight-bold !default;
+
+$list-inline-padding:         .5rem !default;
+
+$mark-bg:                     #fcf8e3 !default;
+
+$hr-margin-y:                 $spacer !default;
+
+
+// Tables
+//
+// Customizes the `.table` component with basic values, each used across all table variations.
+
+$table-cell-padding:          .75rem !default;
+$table-cell-padding-sm:       .3rem !default;
+
+$table-color:                 $body-color !default;
+$table-bg:                    null !default;
+$table-accent-bg:             rgba($black, .05) !default;
+$table-hover-color:           $table-color !default;
+$table-hover-bg:              rgba($black, .075) !default;
+$table-active-bg:             $table-hover-bg !default;
+
+$table-border-width:          $border-width !default;
+$table-border-color:          $border-color !default;
+
+$table-head-bg:               $gray-200 !default;
+$table-head-color:            $gray-700 !default;
+
+$table-dark-color:            $white !default;
+$table-dark-bg:               $gray-800 !default;
+$table-dark-accent-bg:        rgba($white, .05) !default;
+$table-dark-hover-color:      $table-dark-color !default;
+$table-dark-hover-bg:         rgba($white, .075) !default;
+$table-dark-border-color:     lighten($table-dark-bg, 7.5%) !default;
+
+$table-striped-order:         odd !default;
+
+$table-caption-color:         $text-muted !default;
+
+$table-bg-level:              -9 !default;
+$table-border-level:          -6 !default;
+
+
+// Buttons + Forms
+//
+// Shared variables that are reassigned to `$input-` and `$btn-` specific variables.
+
+$input-btn-padding-y:         .375rem !default;
+$input-btn-padding-x:         .75rem !default;
+$input-btn-font-family:       null !default;
+$input-btn-font-size:         $font-size-base !default;
+$input-btn-line-height:       $line-height-base !default;
+
+$input-btn-focus-width:       .2rem !default;
+$input-btn-focus-color:       rgba($component-active-bg, .25) !default;
+$input-btn-focus-box-shadow:  0 0 0 $input-btn-focus-width $input-btn-focus-color !default;
+
+$input-btn-padding-y-sm:      .25rem !default;
+$input-btn-padding-x-sm:      .5rem !default;
+$input-btn-font-size-sm:      $font-size-sm !default;
+$input-btn-line-height-sm:    $line-height-sm !default;
+
+$input-btn-padding-y-lg:      .5rem !default;
+$input-btn-padding-x-lg:      1rem !default;
+$input-btn-font-size-lg:      $font-size-lg !default;
+$input-btn-line-height-lg:    $line-height-lg !default;
+
+$input-btn-border-width:      $border-width !default;
+
+
+// Buttons
+//
+// For each of Bootstrap's buttons, define text, background, and border color.
+
+$btn-padding-y:               $input-btn-padding-y !default;
+$btn-padding-x:               $input-btn-padding-x !default;
+$btn-font-family:             $input-btn-font-family !default;
+$btn-font-size:               $input-btn-font-size !default;
+$btn-line-height:             $input-btn-line-height !default;
+$btn-white-space:             null !default; // Set to `nowrap` to prevent text wrapping
+
+$btn-padding-y-sm:            $input-btn-padding-y-sm !default;
+$btn-padding-x-sm:            $input-btn-padding-x-sm !default;
+$btn-font-size-sm:            $input-btn-font-size-sm !default;
+$btn-line-height-sm:          $input-btn-line-height-sm !default;
+
+$btn-padding-y-lg:            $input-btn-padding-y-lg !default;
+$btn-padding-x-lg:            $input-btn-padding-x-lg !default;
+$btn-font-size-lg:            $input-btn-font-size-lg !default;
+$btn-line-height-lg:          $input-btn-line-height-lg !default;
+
+$btn-border-width:            $input-btn-border-width !default;
+
+$btn-font-weight:             $font-weight-normal !default;
+$btn-box-shadow:              inset 0 1px 0 rgba($white, .15), 0 1px 1px rgba($black, .075) !default;
+$btn-focus-width:             $input-btn-focus-width !default;
+$btn-focus-box-shadow:        $input-btn-focus-box-shadow !default;
+$btn-disabled-opacity:        .65 !default;
+$btn-active-box-shadow:       inset 0 3px 5px rgba($black, .125) !default;
+
+$btn-link-disabled-color:     $gray-600 !default;
+
+$btn-block-spacing-y:         .5rem !default;
+
+// Allows for customizing button radius independently from global border radius
+$btn-border-radius:           $border-radius !default;
+$btn-border-radius-lg:        $border-radius-lg !default;
+$btn-border-radius-sm:        $border-radius-sm !default;
+
+$btn-transition:              color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;
+
+
+// Forms
+
+$label-margin-bottom:                   .5rem !default;
+
+$input-padding-y:                       $input-btn-padding-y !default;
+$input-padding-x:                       $input-btn-padding-x !default;
+$input-font-family:                     $input-btn-font-family !default;
+$input-font-size:                       $input-btn-font-size !default;
+$input-font-weight:                     $font-weight-base !default;
+$input-line-height:                     $input-btn-line-height !default;
+
+$input-padding-y-sm:                    $input-btn-padding-y-sm !default;
+$input-padding-x-sm:                    $input-btn-padding-x-sm !default;
+$input-font-size-sm:                    $input-btn-font-size-sm !default;
+$input-line-height-sm:                  $input-btn-line-height-sm !default;
+
+$input-padding-y-lg:                    $input-btn-padding-y-lg !default;
+$input-padding-x-lg:                    $input-btn-padding-x-lg !default;
+$input-font-size-lg:                    $input-btn-font-size-lg !default;
+$input-line-height-lg:                  $input-btn-line-height-lg !default;
+
+$input-bg:                              $white !default;
+$input-disabled-bg:                     $gray-200 !default;
+
+$input-color:                           $gray-700 !default;
+$input-border-color:                    $gray-400 !default;
+$input-border-width:                    $input-btn-border-width !default;
+$input-box-shadow:                      inset 0 1px 1px rgba($black, .075) !default;
+
+$input-border-radius:                   $border-radius !default;
+$input-border-radius-lg:                $border-radius-lg !default;
+$input-border-radius-sm:                $border-radius-sm !default;
+
+$input-focus-bg:                        $input-bg !default;
+$input-focus-border-color:              lighten($component-active-bg, 25%) !default;
+$input-focus-color:                     $input-color !default;
+$input-focus-width:                     $input-btn-focus-width !default;
+$input-focus-box-shadow:                $input-btn-focus-box-shadow !default;
+
+$input-placeholder-color:               $gray-600 !default;
+$input-plaintext-color:                 $body-color !default;
+
+$input-height-border:                   $input-border-width * 2 !default;
+
+$input-height-inner:                    add($input-line-height * 1em, $input-padding-y * 2) !default;
+$input-height-inner-half:               add($input-line-height * .5em, $input-padding-y) !default;
+$input-height-inner-quarter:            add($input-line-height * .25em, $input-padding-y / 2) !default;
+
+$input-height:                          add($input-line-height * 1em, add($input-padding-y * 2, $input-height-border, false)) !default;
+$input-height-sm:                       add($input-line-height-sm * 1em, add($input-padding-y-sm * 2, $input-height-border, false)) !default;
+$input-height-lg:                       add($input-line-height-lg * 1em, add($input-padding-y-lg * 2, $input-height-border, false)) !default;
+
+$input-transition:                      border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;
+
+$form-text-margin-top:                  .25rem !default;
+
+$form-check-input-gutter:               1.25rem !default;
+$form-check-input-margin-y:             .3rem !default;
+$form-check-input-margin-x:             .25rem !default;
+
+$form-check-inline-margin-x:            .75rem !default;
+$form-check-inline-input-margin-x:      .3125rem !default;
+
+$form-grid-gutter-width:                10px !default;
+$form-group-margin-bottom:              1rem !default;
+
+$input-group-addon-color:               $input-color !default;
+$input-group-addon-bg:                  $gray-200 !default;
+$input-group-addon-border-color:        $input-border-color !default;
+
+$custom-forms-transition:               background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;
+
+$custom-control-gutter:                 .5rem !default;
+$custom-control-spacer-x:               1rem !default;
+$custom-control-cursor:                 null !default;
+
+$custom-control-indicator-size:         1rem !default;
+$custom-control-indicator-bg:           $input-bg !default;
+
+$custom-control-indicator-bg-size:      50% 50% !default;
+$custom-control-indicator-box-shadow:   $input-box-shadow !default;
+$custom-control-indicator-border-color: $gray-500 !default;
+$custom-control-indicator-border-width: $input-border-width !default;
+
+$custom-control-label-color:            null !default;
+
+$custom-control-indicator-disabled-bg:          $input-disabled-bg !default;
+$custom-control-label-disabled-color:           $gray-600 !default;
+
+$custom-control-indicator-checked-color:        $component-active-color !default;
+$custom-control-indicator-checked-bg:           $component-active-bg !default;
+$custom-control-indicator-checked-disabled-bg:  rgba(theme-color("primary"), .5) !default;
+$custom-control-indicator-checked-box-shadow:   null !default;
+$custom-control-indicator-checked-border-color: $custom-control-indicator-checked-bg !default;
+
+$custom-control-indicator-focus-box-shadow:     $input-focus-box-shadow !default;
+$custom-control-indicator-focus-border-color:   $input-focus-border-color !default;
+
+$custom-control-indicator-active-color:         $component-active-color !default;
+$custom-control-indicator-active-bg:            lighten($component-active-bg, 35%) !default;
+$custom-control-indicator-active-box-shadow:    null !default;
+$custom-control-indicator-active-border-color:  $custom-control-indicator-active-bg !default;
+
+$custom-checkbox-indicator-border-radius:       $border-radius !default;
+$custom-checkbox-indicator-icon-checked:        url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'><path fill='#{$custom-control-indicator-checked-color}' d='M6.564.75l-3.59 3.612-1.538-1.55L0 4.26l2.974 2.99L8 2.193z'/></svg>") !default;
+
+$custom-checkbox-indicator-indeterminate-bg:           $component-active-bg !default;
+$custom-checkbox-indicator-indeterminate-color:        $custom-control-indicator-checked-color !default;
+$custom-checkbox-indicator-icon-indeterminate:         url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='4' height='4' viewBox='0 0 4 4'><path stroke='#{$custom-checkbox-indicator-indeterminate-color}' d='M0 2h4'/></svg>") !default;
+$custom-checkbox-indicator-indeterminate-box-shadow:   null !default;
+$custom-checkbox-indicator-indeterminate-border-color: $custom-checkbox-indicator-indeterminate-bg !default;
+
+$custom-radio-indicator-border-radius:          50% !default;
+$custom-radio-indicator-icon-checked:           url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='-4 -4 8 8'><circle r='3' fill='#{$custom-control-indicator-checked-color}'/></svg>") !default;
+
+$custom-switch-width:                           $custom-control-indicator-size * 1.75 !default;
+$custom-switch-indicator-border-radius:         $custom-control-indicator-size / 2 !default;
+$custom-switch-indicator-size:                  subtract($custom-control-indicator-size, $custom-control-indicator-border-width * 4) !default;
+
+$custom-select-padding-y:           $input-padding-y !default;
+$custom-select-padding-x:           $input-padding-x !default;
+$custom-select-font-family:         $input-font-family !default;
+$custom-select-font-size:           $input-font-size !default;
+$custom-select-height:              $input-height !default;
+$custom-select-indicator-padding:   1rem !default; // Extra padding to account for the presence of the background-image based indicator
+$custom-select-font-weight:         $input-font-weight !default;
+$custom-select-line-height:         $input-line-height !default;
+$custom-select-color:               $input-color !default;
+$custom-select-disabled-color:      $gray-600 !default;
+$custom-select-bg:                  $input-bg !default;
+$custom-select-disabled-bg:         $gray-200 !default;
+$custom-select-bg-size:             8px 10px !default; // In pixels because image dimensions
+$custom-select-indicator-color:     $gray-800 !default;
+$custom-select-indicator:           url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='4' height='5' viewBox='0 0 4 5'><path fill='#{$custom-select-indicator-color}' d='M2 0L0 2h4zm0 5L0 3h4z'/></svg>") !default;
+$custom-select-background:          escape-svg($custom-select-indicator) no-repeat right $custom-select-padding-x center / $custom-select-bg-size !default; // Used so we can have multiple background elements (e.g., arrow and feedback icon)
+
+$custom-select-feedback-icon-padding-right: add(1em * .75, (2 * $custom-select-padding-y * .75) + $custom-select-padding-x + $custom-select-indicator-padding) !default;
+$custom-select-feedback-icon-position:      center right ($custom-select-padding-x + $custom-select-indicator-padding) !default;
+$custom-select-feedback-icon-size:          $input-height-inner-half $input-height-inner-half !default;
+
+$custom-select-border-width:        $input-border-width !default;
+$custom-select-border-color:        $input-border-color !default;
+$custom-select-border-radius:       $border-radius !default;
+$custom-select-box-shadow:          inset 0 1px 2px rgba($black, .075) !default;
+
+$custom-select-focus-border-color:  $input-focus-border-color !default;
+$custom-select-focus-width:         $input-focus-width !default;
+$custom-select-focus-box-shadow:    0 0 0 $custom-select-focus-width $input-btn-focus-color !default;
+
+$custom-select-padding-y-sm:        $input-padding-y-sm !default;
+$custom-select-padding-x-sm:        $input-padding-x-sm !default;
+$custom-select-font-size-sm:        $input-font-size-sm !default;
+$custom-select-height-sm:           $input-height-sm !default;
+
+$custom-select-padding-y-lg:        $input-padding-y-lg !default;
+$custom-select-padding-x-lg:        $input-padding-x-lg !default;
+$custom-select-font-size-lg:        $input-font-size-lg !default;
+$custom-select-height-lg:           $input-height-lg !default;
+
+$custom-range-track-width:          100% !default;
+$custom-range-track-height:         .5rem !default;
+$custom-range-track-cursor:         pointer !default;
+$custom-range-track-bg:             $gray-300 !default;
+$custom-range-track-border-radius:  1rem !default;
+$custom-range-track-box-shadow:     inset 0 .25rem .25rem rgba($black, .1) !default;
+
+$custom-range-thumb-width:                   1rem !default;
+$custom-range-thumb-height:                  $custom-range-thumb-width !default;
+$custom-range-thumb-bg:                      $component-active-bg !default;
+$custom-range-thumb-border:                  0 !default;
+$custom-range-thumb-border-radius:           1rem !default;
+$custom-range-thumb-box-shadow:              0 .1rem .25rem rgba($black, .1) !default;
+$custom-range-thumb-focus-box-shadow:        0 0 0 1px $body-bg, $input-focus-box-shadow !default;
+$custom-range-thumb-focus-box-shadow-width:  $input-focus-width !default; // For focus box shadow issue in IE/Edge
+$custom-range-thumb-active-bg:               lighten($component-active-bg, 35%) !default;
+$custom-range-thumb-disabled-bg:             $gray-500 !default;
+
+$custom-file-height:                $input-height !default;
+$custom-file-height-inner:          $input-height-inner !default;
+$custom-file-focus-border-color:    $input-focus-border-color !default;
+$custom-file-focus-box-shadow:      $input-focus-box-shadow !default;
+$custom-file-disabled-bg:           $input-disabled-bg !default;
+
+$custom-file-padding-y:             $input-padding-y !default;
+$custom-file-padding-x:             $input-padding-x !default;
+$custom-file-line-height:           $input-line-height !default;
+$custom-file-font-family:           $input-font-family !default;
+$custom-file-font-weight:           $input-font-weight !default;
+$custom-file-color:                 $input-color !default;
+$custom-file-bg:                    $input-bg !default;
+$custom-file-border-width:          $input-border-width !default;
+$custom-file-border-color:          $input-border-color !default;
+$custom-file-border-radius:         $input-border-radius !default;
+$custom-file-box-shadow:            $input-box-shadow !default;
+$custom-file-button-color:          $custom-file-color !default;
+$custom-file-button-bg:             $input-group-addon-bg !default;
+$custom-file-text: (
+  en: "Browse"
+) !default;
+
+
+// Form validation
+
+$form-feedback-margin-top:          $form-text-margin-top !default;
+$form-feedback-font-size:           $small-font-size !default;
+$form-feedback-valid-color:         theme-color("success") !default;
+$form-feedback-invalid-color:       theme-color("danger") !default;
+
+$form-feedback-icon-valid-color:    $form-feedback-valid-color !default;
+$form-feedback-icon-valid:          url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'><path fill='#{$form-feedback-icon-valid-color}' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/></svg>") !default;
+$form-feedback-icon-invalid-color:  $form-feedback-invalid-color !default;
+$form-feedback-icon-invalid:        url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='#{$form-feedback-icon-invalid-color}' viewBox='0 0 12 12'><circle cx='6' cy='6' r='4.5'/><path stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/><circle cx='6' cy='8.2' r='.6' fill='#{$form-feedback-icon-invalid-color}' stroke='none'/></svg>") !default;
+
+$form-validation-states: () !default;
+$form-validation-states: map-merge(
+  (
+    "valid": (
+      "color": $form-feedback-valid-color,
+      "icon": $form-feedback-icon-valid
+    ),
+    "invalid": (
+      "color": $form-feedback-invalid-color,
+      "icon": $form-feedback-icon-invalid
+    ),
+  ),
+  $form-validation-states
+);
+
+// Z-index master list
+//
+// Warning: Avoid customizing these values. They're used for a bird's eye view
+// of components dependent on the z-axis and are designed to all work together.
+
+$zindex-dropdown:                   1000 !default;
+$zindex-sticky:                     1020 !default;
+$zindex-fixed:                      1030 !default;
+$zindex-modal-backdrop:             1040 !default;
+$zindex-modal:                      1050 !default;
+$zindex-popover:                    1060 !default;
+$zindex-tooltip:                    1070 !default;
+
+
+// Navs
+
+$nav-link-padding-y:                .5rem !default;
+$nav-link-padding-x:                1rem !default;
+$nav-link-disabled-color:           $gray-600 !default;
+
+$nav-tabs-border-color:             $gray-300 !default;
+$nav-tabs-border-width:             $border-width !default;
+$nav-tabs-border-radius:            $border-radius !default;
+$nav-tabs-link-hover-border-color:  $gray-200 $gray-200 $nav-tabs-border-color !default;
+$nav-tabs-link-active-color:        $gray-700 !default;
+$nav-tabs-link-active-bg:           $body-bg !default;
+$nav-tabs-link-active-border-color: $gray-300 $gray-300 $nav-tabs-link-active-bg !default;
+
+$nav-pills-border-radius:           $border-radius !default;
+$nav-pills-link-active-color:       $component-active-color !default;
+$nav-pills-link-active-bg:          $component-active-bg !default;
+
+$nav-divider-color:                 $gray-200 !default;
+$nav-divider-margin-y:              $spacer / 2 !default;
+
+
+// Navbar
+
+$navbar-padding-y:                  $spacer / 2 !default;
+$navbar-padding-x:                  $spacer !default;
+
+$navbar-nav-link-padding-x:         .5rem !default;
+
+$navbar-brand-font-size:            $font-size-lg !default;
+// Compute the navbar-brand padding-y so the navbar-brand will have the same height as navbar-text and nav-link
+$nav-link-height:                   $font-size-base * $line-height-base + $nav-link-padding-y * 2 !default;
+$navbar-brand-height:               $navbar-brand-font-size * $line-height-base !default;
+$navbar-brand-padding-y:            ($nav-link-height - $navbar-brand-height) / 2 !default;
+
+$navbar-toggler-padding-y:          .25rem !default;
+$navbar-toggler-padding-x:          .75rem !default;
+$navbar-toggler-font-size:          $font-size-lg !default;
+$navbar-toggler-border-radius:      $btn-border-radius !default;
+
+$navbar-dark-color:                 rgba($white, .5) !default;
+$navbar-dark-hover-color:           rgba($white, .75) !default;
+$navbar-dark-active-color:          $white !default;
+$navbar-dark-disabled-color:        rgba($white, .25) !default;
+$navbar-dark-toggler-icon-bg:       url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'><path stroke='#{$navbar-dark-color}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>") !default;
+$navbar-dark-toggler-border-color:  rgba($white, .1) !default;
+
+$navbar-light-color:                rgba($black, .5) !default;
+$navbar-light-hover-color:          rgba($black, .7) !default;
+$navbar-light-active-color:         rgba($black, .9) !default;
+$navbar-light-disabled-color:       rgba($black, .3) !default;
+$navbar-light-toggler-icon-bg:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'><path stroke='#{$navbar-light-color}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>") !default;
+$navbar-light-toggler-border-color: rgba($black, .1) !default;
+
+$navbar-light-brand-color:                $navbar-light-active-color !default;
+$navbar-light-brand-hover-color:          $navbar-light-active-color !default;
+$navbar-dark-brand-color:                 $navbar-dark-active-color !default;
+$navbar-dark-brand-hover-color:           $navbar-dark-active-color !default;
+
+
+// Dropdowns
+//
+// Dropdown menu container and contents.
+
+$dropdown-min-width:                10rem !default;
+$dropdown-padding-y:                .5rem !default;
+$dropdown-spacer:                   .125rem !default;
+$dropdown-font-size:                $font-size-base !default;
+$dropdown-color:                    $body-color !default;
+$dropdown-bg:                       $white !default;
+$dropdown-border-color:             rgba($black, .15) !default;
+$dropdown-border-radius:            $border-radius !default;
+$dropdown-border-width:             $border-width !default;
+$dropdown-inner-border-radius:      subtract($dropdown-border-radius, $dropdown-border-width) !default;
+$dropdown-divider-bg:               $gray-200 !default;
+$dropdown-divider-margin-y:         $nav-divider-margin-y !default;
+$dropdown-box-shadow:               0 .5rem 1rem rgba($black, .175) !default;
+
+$dropdown-link-color:               $gray-900 !default;
+$dropdown-link-hover-color:         darken($gray-900, 5%) !default;
+$dropdown-link-hover-bg:            $gray-100 !default;
+
+$dropdown-link-active-color:        $component-active-color !default;
+$dropdown-link-active-bg:           $component-active-bg !default;
+
+$dropdown-link-disabled-color:      $gray-600 !default;
+
+$dropdown-item-padding-y:           .25rem !default;
+$dropdown-item-padding-x:           1.5rem !default;
+
+$dropdown-header-color:             $gray-600 !default;
+$dropdown-header-padding:           $dropdown-padding-y $dropdown-item-padding-x !default;
+
+
+// Pagination
+
+$pagination-padding-y:              .5rem !default;
+$pagination-padding-x:              .75rem !default;
+$pagination-padding-y-sm:           .25rem !default;
+$pagination-padding-x-sm:           .5rem !default;
+$pagination-padding-y-lg:           .75rem !default;
+$pagination-padding-x-lg:           1.5rem !default;
+$pagination-line-height:            1.25 !default;
+
+$pagination-color:                  $link-color !default;
+$pagination-bg:                     $white !default;
+$pagination-border-width:           $border-width !default;
+$pagination-border-color:           $gray-300 !default;
+
+$pagination-focus-box-shadow:       $input-btn-focus-box-shadow !default;
+$pagination-focus-outline:          0 !default;
+
+$pagination-hover-color:            $link-hover-color !default;
+$pagination-hover-bg:               $gray-200 !default;
+$pagination-hover-border-color:     $gray-300 !default;
+
+$pagination-active-color:           $component-active-color !default;
+$pagination-active-bg:              $component-active-bg !default;
+$pagination-active-border-color:    $pagination-active-bg !default;
+
+$pagination-disabled-color:         $gray-600 !default;
+$pagination-disabled-bg:            $white !default;
+$pagination-disabled-border-color:  $gray-300 !default;
+
+
+// Jumbotron
+
+$jumbotron-padding:                 2rem !default;
+$jumbotron-color:                   null !default;
+$jumbotron-bg:                      $gray-200 !default;
+
+
+// Cards
+
+$card-spacer-y:                     .75rem !default;
+$card-spacer-x:                     1.25rem !default;
+$card-border-width:                 $border-width !default;
+$card-border-radius:                $border-radius !default;
+$card-border-color:                 rgba($black, .125) !default;
+$card-inner-border-radius:          subtract($card-border-radius, $card-border-width) !default;
+$card-cap-bg:                       rgba($black, .03) !default;
+$card-cap-color:                    null !default;
+$card-height:                       null !default;
+$card-color:                        null !default;
+$card-bg:                           $white !default;
+
+$card-img-overlay-padding:          1.25rem !default;
+
+$card-group-margin:                 $grid-gutter-width / 2 !default;
+$card-deck-margin:                  $card-group-margin !default;
+
+$card-columns-count:                3 !default;
+$card-columns-gap:                  1.25rem !default;
+$card-columns-margin:               $card-spacer-y !default;
+
+
+// Tooltips
+
+$tooltip-font-size:                 $font-size-sm !default;
+$tooltip-max-width:                 200px !default;
+$tooltip-color:                     $white !default;
+$tooltip-bg:                        $black !default;
+$tooltip-border-radius:             $border-radius !default;
+$tooltip-opacity:                   .9 !default;
+$tooltip-padding-y:                 .25rem !default;
+$tooltip-padding-x:                 .5rem !default;
+$tooltip-margin:                    0 !default;
+
+$tooltip-arrow-width:               .8rem !default;
+$tooltip-arrow-height:              .4rem !default;
+$tooltip-arrow-color:               $tooltip-bg !default;
+
+// Form tooltips must come after regular tooltips
+$form-feedback-tooltip-padding-y:     $tooltip-padding-y !default;
+$form-feedback-tooltip-padding-x:     $tooltip-padding-x !default;
+$form-feedback-tooltip-font-size:     $tooltip-font-size !default;
+$form-feedback-tooltip-line-height:   $line-height-base !default;
+$form-feedback-tooltip-opacity:       $tooltip-opacity !default;
+$form-feedback-tooltip-border-radius: $tooltip-border-radius !default;
+
+
+// Popovers
+
+$popover-font-size:                 $font-size-sm !default;
+$popover-bg:                        $white !default;
+$popover-max-width:                 276px !default;
+$popover-border-width:              $border-width !default;
+$popover-border-color:              rgba($black, .2) !default;
+$popover-border-radius:             $border-radius-lg !default;
+$popover-inner-border-radius:       subtract($popover-border-radius, $popover-border-width) !default;
+$popover-box-shadow:                0 .25rem .5rem rgba($black, .2) !default;
+
+$popover-header-bg:                 darken($popover-bg, 3%) !default;
+$popover-header-color:              $headings-color !default;
+$popover-header-padding-y:          .5rem !default;
+$popover-header-padding-x:          .75rem !default;
+
+$popover-body-color:                $body-color !default;
+$popover-body-padding-y:            $popover-header-padding-y !default;
+$popover-body-padding-x:            $popover-header-padding-x !default;
+
+$popover-arrow-width:               1rem !default;
+$popover-arrow-height:              .5rem !default;
+$popover-arrow-color:               $popover-bg !default;
+
+$popover-arrow-outer-color:         fade-in($popover-border-color, .05) !default;
+
+
+// Toasts
+
+$toast-max-width:                   350px !default;
+$toast-padding-x:                   .75rem !default;
+$toast-padding-y:                   .25rem !default;
+$toast-font-size:                   .875rem !default;
+$toast-color:                       null !default;
+$toast-background-color:            rgba($white, .85) !default;
+$toast-border-width:                1px !default;
+$toast-border-color:                rgba(0, 0, 0, .1) !default;
+$toast-border-radius:               .25rem !default;
+$toast-box-shadow:                  0 .25rem .75rem rgba($black, .1) !default;
+
+$toast-header-color:                $gray-600 !default;
+$toast-header-background-color:     rgba($white, .85) !default;
+$toast-header-border-color:         rgba(0, 0, 0, .05) !default;
+
+
+// Badges
+
+$badge-font-size:                   75% !default;
+$badge-font-weight:                 $font-weight-bold !default;
+$badge-padding-y:                   .25em !default;
+$badge-padding-x:                   .4em !default;
+$badge-border-radius:               $border-radius !default;
+
+$badge-transition:                  $btn-transition !default;
+$badge-focus-width:                 $input-btn-focus-width !default;
+
+$badge-pill-padding-x:              .6em !default;
+// Use a higher than normal value to ensure completely rounded edges when
+// customizing padding or font-size on labels.
+$badge-pill-border-radius:          10rem !default;
+
+
+// Modals
+
+// Padding applied to the modal body
+$modal-inner-padding:               1rem !default;
+
+// Margin between elements in footer, must be lower than or equal to 2 * $modal-inner-padding
+$modal-footer-margin-between:       .5rem !default;
+
+$modal-dialog-margin:               .5rem !default;
+$modal-dialog-margin-y-sm-up:       1.75rem !default;
+
+$modal-title-line-height:           $line-height-base !default;
+
+$modal-content-color:               null !default;
+$modal-content-bg:                  $white !default;
+$modal-content-border-color:        rgba($black, .2) !default;
+$modal-content-border-width:        $border-width !default;
+$modal-content-border-radius:       $border-radius-lg !default;
+$modal-content-inner-border-radius: subtract($modal-content-border-radius, $modal-content-border-width) !default;
+$modal-content-box-shadow-xs:       0 .25rem .5rem rgba($black, .5) !default;
+$modal-content-box-shadow-sm-up:    0 .5rem 1rem rgba($black, .5) !default;
+
+$modal-backdrop-bg:                 $black !default;
+$modal-backdrop-opacity:            .5 !default;
+$modal-header-border-color:         $border-color !default;
+$modal-footer-border-color:         $modal-header-border-color !default;
+$modal-header-border-width:         $modal-content-border-width !default;
+$modal-footer-border-width:         $modal-header-border-width !default;
+$modal-header-padding-y:            1rem !default;
+$modal-header-padding-x:            1rem !default;
+$modal-header-padding:              $modal-header-padding-y $modal-header-padding-x !default; // Keep this for backwards compatibility
+
+$modal-xl:                          1140px !default;
+$modal-lg:                          800px !default;
+$modal-md:                          500px !default;
+$modal-sm:                          300px !default;
+
+$modal-fade-transform:              translate(0, -50px) !default;
+$modal-show-transform:              none !default;
+$modal-transition:                  transform .3s ease-out !default;
+$modal-scale-transform:             scale(1.02) !default;
+
+
+// Alerts
+//
+// Define alert colors, border radius, and padding.
+
+$alert-padding-y:                   .75rem !default;
+$alert-padding-x:                   1.25rem !default;
+$alert-margin-bottom:               1rem !default;
+$alert-border-radius:               $border-radius !default;
+$alert-link-font-weight:            $font-weight-bold !default;
+$alert-border-width:                $border-width !default;
+
+$alert-bg-level:                    -10 !default;
+$alert-border-level:                -9 !default;
+$alert-color-level:                 6 !default;
+
+
+// Progress bars
+
+$progress-height:                   1rem !default;
+$progress-font-size:                $font-size-base * .75 !default;
+$progress-bg:                       $gray-200 !default;
+$progress-border-radius:            $border-radius !default;
+$progress-box-shadow:               inset 0 .1rem .1rem rgba($black, .1) !default;
+$progress-bar-color:                $white !default;
+$progress-bar-bg:                   theme-color("primary") !default;
+$progress-bar-animation-timing:     1s linear infinite !default;
+$progress-bar-transition:           width .6s ease !default;
+
+
+// List group
+
+$list-group-color:                  null !default;
+$list-group-bg:                     $white !default;
+$list-group-border-color:           rgba($black, .125) !default;
+$list-group-border-width:           $border-width !default;
+$list-group-border-radius:          $border-radius !default;
+
+$list-group-item-padding-y:         .75rem !default;
+$list-group-item-padding-x:         1.25rem !default;
+
+$list-group-hover-bg:               $gray-100 !default;
+$list-group-active-color:           $component-active-color !default;
+$list-group-active-bg:              $component-active-bg !default;
+$list-group-active-border-color:    $list-group-active-bg !default;
+
+$list-group-disabled-color:         $gray-600 !default;
+$list-group-disabled-bg:            $list-group-bg !default;
+
+$list-group-action-color:           $gray-700 !default;
+$list-group-action-hover-color:     $list-group-action-color !default;
+
+$list-group-action-active-color:    $body-color !default;
+$list-group-action-active-bg:       $gray-200 !default;
+
+
+// Image thumbnails
+
+$thumbnail-padding:                 .25rem !default;
+$thumbnail-bg:                      $body-bg !default;
+$thumbnail-border-width:            $border-width !default;
+$thumbnail-border-color:            $gray-300 !default;
+$thumbnail-border-radius:           $border-radius !default;
+$thumbnail-box-shadow:              0 1px 2px rgba($black, .075) !default;
+
+
+// Figures
+
+$figure-caption-font-size:          90% !default;
+$figure-caption-color:              $gray-600 !default;
+
+
+// Breadcrumbs
+
+$breadcrumb-font-size:              null !default;
+
+$breadcrumb-padding-y:              .75rem !default;
+$breadcrumb-padding-x:              1rem !default;
+$breadcrumb-item-padding:           .5rem !default;
+
+$breadcrumb-margin-bottom:          1rem !default;
+
+$breadcrumb-bg:                     $gray-200 !default;
+$breadcrumb-divider-color:          $gray-600 !default;
+$breadcrumb-active-color:           $gray-600 !default;
+$breadcrumb-divider:                quote("/") !default;
+
+$breadcrumb-border-radius:          $border-radius !default;
+
+
+// Carousel
+
+$carousel-control-color:             $white !default;
+$carousel-control-width:             15% !default;
+$carousel-control-opacity:           .5 !default;
+$carousel-control-hover-opacity:     .9 !default;
+$carousel-control-transition:        opacity .15s ease !default;
+
+$carousel-indicator-width:           30px !default;
+$carousel-indicator-height:          3px !default;
+$carousel-indicator-hit-area-height: 10px !default;
+$carousel-indicator-spacer:          3px !default;
+$carousel-indicator-active-bg:       $white !default;
+$carousel-indicator-transition:      opacity .6s ease !default;
+
+$carousel-caption-width:             70% !default;
+$carousel-caption-color:             $white !default;
+
+$carousel-control-icon-width:        20px !default;
+
+$carousel-control-prev-icon-bg:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' fill='#{$carousel-control-color}' width='8' height='8' viewBox='0 0 8 8'><path d='M5.25 0l-4 4 4 4 1.5-1.5L4.25 4l2.5-2.5L5.25 0z'/></svg>") !default;
+$carousel-control-next-icon-bg:      url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' fill='#{$carousel-control-color}' width='8' height='8' viewBox='0 0 8 8'><path d='M2.75 0l-1.5 1.5L3.75 4l-2.5 2.5L2.75 8l4-4-4-4z'/></svg>") !default;
+
+$carousel-transition-duration:       .6s !default;
+$carousel-transition:                transform $carousel-transition-duration ease-in-out !default; // Define transform transition first if using multiple transitions (e.g., `transform 2s ease, opacity .5s ease-out`)
+
+
+// Spinners
+
+$spinner-width:         2rem !default;
+$spinner-height:        $spinner-width !default;
+$spinner-border-width:  .25em !default;
+
+$spinner-width-sm:        1rem !default;
+$spinner-height-sm:       $spinner-width-sm !default;
+$spinner-border-width-sm: .2em !default;
+
+
+// Close
+
+$close-font-size:                   $font-size-base * 1.5 !default;
+$close-font-weight:                 $font-weight-bold !default;
+$close-color:                       $black !default;
+$close-text-shadow:                 0 1px 0 $white !default;
+
+
+// Code
+
+$code-font-size:                    87.5% !default;
+$code-color:                        $pink !default;
+
+$kbd-padding-y:                     .2rem !default;
+$kbd-padding-x:                     .4rem !default;
+$kbd-font-size:                     $code-font-size !default;
+$kbd-color:                         $white !default;
+$kbd-bg:                            $gray-900 !default;
+
+$pre-color:                         $gray-900 !default;
+$pre-scrollable-max-height:         340px !default;
+
+
+// Utilities
+
+$displays: none, inline, inline-block, block, table, table-row, table-cell, flex, inline-flex !default;
+$overflows: auto, hidden !default;
+$positions: static, relative, absolute, fixed, sticky !default;
+$user-selects: all, auto, none !default;
+
+
+// Printing
+
+$print-page-size:                   a3 !default;
+$print-body-min-width:              map-get($grid-breakpoints, "lg") !default;

development/examples/example3/build/assets/sass/bootstrap/bootstrap-grid.scss

+/*!
+ * Bootstrap Grid v4.5.2 (https://getbootstrap.com/)
+ * Copyright 2011-2020 The Bootstrap Authors
+ * Copyright 2011-2020 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ */
+
+html {
+  box-sizing: border-box;
+  -ms-overflow-style: scrollbar;
+}
+
+*,
+*::before,
+*::after {
+  box-sizing: inherit;
+}
+
+@import "functions";
+@import "variables";
+
+@import "mixins/breakpoints";
+@import "mixins/grid-framework";
+@import "mixins/grid";
+
+@import "grid";
+@import "utilities/display";
+@import "utilities/flex";
+@import "utilities/spacing";

development/examples/example3/build/assets/sass/bootstrap/bootstrap-reboot.scss

+/*!
+ * Bootstrap Reboot v4.5.2 (https://getbootstrap.com/)
+ * Copyright 2011-2020 The Bootstrap Authors
+ * Copyright 2011-2020 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
+ */
+
+@import "functions";
+@import "variables";
+@import "mixins";
+@import "reboot";