我希望下拉导航中的子菜单与其父级内联。第一个链接是内联的,因为 - .dropdown-submenu > .dropdown-menu {top:0;} 但子菜单中的其他链接“顶部”位置相对于其父菜单链接发生变化。请看http://bootply.com/66517
<ul class="dropdown-menu">
<li class="dropdown-submenu">
<a href="#">More options</a>
<ul class="dropdown-menu">
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
</ul>
</li>
<li class="dropdown-submenu">
<a href="#">More options</a>
<ul class="dropdown-menu">
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
</ul>
</li>
<li class="dropdown-submenu">
<a href="#">More options</a>
<ul class="dropdown-menu">
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
<li><a href="#">Second level link</a></li>
</ul>
</li>
<hr>
</ul>
</li>
</ul>