app/assets/stylesheets/spree/backend/shared/_base.scss in spree_backend-3.0.0 vs app/assets/stylesheets/spree/backend/shared/_base.scss in spree_backend-3.0.1

@@ -8,8 +8,10 @@
 
 .is-hidden {
   display: none;
 }
 
-.no-padding-bottom {
-  padding-bottom: 0;
-}
+// No-margin and no-padding helper classes
+@each $side in top bottom left right {
+  .no-margin-#{$side}  { margin-#{side}: 0; }
+  .no-padding-#{$side} { padding-#{side}: 0; }
+}
\ No newline at end of file