Restore `rem` unit (#31746)

Fix unintentional unit change in https://github.com/twbs/bootstrap/commit/1af79bbc5267428af9fcb4a8fc9e6ab0b30328f4#diff-d8ee409a461718bfb6240710c8c73382

diff --git a/scss/_variables.scss b/scss/_variables.scss
index 15f5d8153eb62123ae790e901b09ee217cbf270f..cd911ba3c7417fa9b4709a2640dcb62063046f85 100644 (file)
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -545,7 +545,7 @@ $input-btn-font-family:       null !default;
 $input-btn-font-size:         $font-size-base !default;
 $input-btn-line-height:       $line-height-base !default;
 
-$input-btn-focus-width:         .25em !default;
+$input-btn-focus-width:         .25rem !default;
 $input-btn-focus-color-opacity: .25 !default;
 $input-btn-focus-color:         rgba($component-active-bg, $input-btn-focus-color-opacity) !default;
 $input-btn-focus-box-shadow:    0 0 0 $input-btn-focus-width $input-btn-focus-color !default;