Issue #2398457 by DickJohnson, idebr, rpayanm: Clean up the "breadcrumb" component in Bartik

core/themes/bartik/css/components/breadcrumb.css

-/* -------------- Breadcrumbs   -------------- */
+/**
+ * @file
+ * Styles for Bartik's breadcrumbs.
+ */
 
 .breadcrumb {
   font-size: 0.929em;
+  margin: 0 15px;
 }

core/themes/bartik/css/layout.css

@@ -42,9 +42,6 @@ body,
 .sidebar .section {
   padding: 0 15px;
 }
-.breadcrumb {
-  margin: 0 15px;
-}
 #footer-wrapper {
   padding: 35px 0 30px;
 }