test: force an important none margin

src/styles/margins.scss

@@ -16,6 +16,11 @@ $medium: "(max-width: 1200px) and (min-width: 769px)";
     &-right-xxxsmall {
         margin-right: 3px;
     }
+    &-bottom {
+      &-none {
+          margin-bottom: 0 !important;
+      }
+    }
 }
 @media($medium) {
     .md-margin {