如何在子菜单上添加环绕。如果添加包装纸，则菜单不再起作用。
<ul class="nav flex-row smartmenus d-print-none sm" data-smartmenus-id="">
<li class="nav-item dropdown">
<a href="/somepage1.html" class="nav-link dropdown-toggle has-submenu" id="" aria-haspopup="true" aria-controls="" aria-expanded="false">Some page</a>
<!--<div class="mywrap">-->
<ul class="dropdown-menu" role="group" id="" aria-hidden="true" aria-labelledby="" aria-expanded="false">
<li class="dropdown-submenu">
<a href="/somepage1/test.html" class="dropdown-item dropdown-toggle-submenu has-submenu" id="" aria-haspopup="true" aria-controls="" aria-expanded="false">Test</a>
</li>
</ul>
<!--</div>-->
</li>
</ul>