Remove padding, background-color, and border-radius on .breadcrumb

scss/_breadcrumb.scss

@@ -1,12 +1,9 @@
 .breadcrumb {
  display: flex;
  flex-wrap: wrap;
- padding: $breadcrumb-padding-y $breadcrumb-padding-x;
  margin-bottom: $breadcrumb-margin-bottom;
  @include font-size($breadcrumb-font-size);
  list-style: none;
- background-color: $breadcrumb-bg;
- @include border-radius($breadcrumb-border-radius);
 }
 
 .breadcrumb-item {

scss/_variables.scss

@@ -1157,20 +1157,12 @@ $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-x: .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
 

site/content/docs/4.3/migration.md

@@ -131,6 +131,10 @@ Badges were overhauled to better differentiate themselves from buttons and to be
 - **Todo:** Removed `.badge-pill` for the `.rounded-pill` utility class
 - **Todo:** Removed badge's hover and focus styles for `a.badge` and `button.badge`.
 
+### Breadcrumbs
+
+- Removed default `padding`, `background-color`, and `border-radius` from `.breadcrumb`. These styles are a little too presecriptive and can easily be restored or modified with utilities.
+
 ### Cards
 
 - Removed the card columns in favor of a Masonry grid [See #28922](https://github.com/twbs/bootstrap/pull/28922).