[Resolved testing issue]

Author: hitesh-wagento

app/design/frontend/Magento/blank/Magento_Swatches/web/css/source/_module.less

@@ -89,8 +89,7 @@
             }
 
             &-options {
-                margin-top: @indent__s;
-                margin-bottom: @indent__s;
+                margin: @indent__s 0;
 
                 &:focus {
                     box-shadow: none;