Explore: mini styling fix for angular query editors

public/app/features/explore/QueryEditor.tsx

@@ -73,6 +73,6 @@ export default class QueryEditor extends PureComponent<QueryEditorProps, any> {
   }
 
   render() {
-    return <div ref={element => (this.element = element)} style={{ width: '100%' }} />;
+    return <div className="gf-form-query" ref={element => (this.element = element)} style={{ width: '100%' }} />;
   }
 }