ENGCOM-1793: [Forwardport] [Resolved : Menu widget submenu alignment #7897] #15709

 - Merge Pull Request #15709 from dmytro-ch/magento2:2.3-develop-PR-port-15645
 - Merged commits:
   1. 14bf8af

Author: magento-engcom-team

lib/web/css/source/lib/_navigation.less

@@ -305,6 +305,10 @@
             .lib-css(border-top, none);
         }
 
+        li.level1 {
+            position: relative;
+        }
+
         .level0 {
             .lib-css(margin, @_nav-level0-item-margin);
             display: inline-block;