MAGETWO-37998: "Add" button on Backend page lost its bottom padding

Author: zanilee

app/design/adminhtml/Magento/backend/web/css/styles-old.less

@@ -1268,12 +1268,15 @@ input.no-display,
         border-bottom: 0;
     }
 
-    .fieldset-wrapper-title > .actions,
     .fieldset .legend > .actions {
         float: right;
         padding-top: 8px;
     }
 
+    .fieldset-wrapper-title > .actions {
+        float: right;
+    }
+
     .fieldset > .legend + br {
         display: block;
         height: 0;