diff --git a/source/components/form/style/field-set.pcss b/source/components/form/style/field-set.pcss
index fa3eb5dc7c577462933d0985bdf0d8b9c64ecaab..22765abaf3ddd9124483f916436b9962706505f3 100644
--- a/source/components/form/style/field-set.pcss
+++ b/source/components/form/style/field-set.pcss
@@ -137,6 +137,7 @@ slot {
 ::slotted(input[type="color"]) {
     padding: 0 0.2rem;
     min-height: calc(1.8rem + 0.4rem);
+    width: 100%;
 }
 
 ::slotted(input[type="time"]),