html Bootstrap 3子菜单 - http://stackoverflow.com/questions/18023493/bootstrap-3-dropdown-sub-menu-mis

Posted 2021-05-10

<style>
.dropdown-submenu{position:relative;}
.dropdown-submenu>.dropdown-menu{top:0;left:100%;margin-top:-6px;margin-left:-1px;-webkit-border-radius:0 6px 6px 6px;-moz-border-radius:0 6px 6px 6px;border-radius:0 6px 6px 6px;}
.dropdown-submenu:hover>.dropdown-menu{display:block;}
.dropdown-submenu>a:after{display:block;content:" ";float:right;width:0;height:0;border-color:transparent;border-style:solid;border-width:5px 0 5px 5px;border-left-color:#cccccc;margin-top:5px;margin-right:-10px;}
.dropdown-submenu:hover>a:after{border-left-color:#ffffff;}
.dropdown-submenu.pull-left{float:none;}.dropdown-submenu.pull-left>.dropdown-menu{left:-100%;margin-left:10px;-webkit-border-radius:6px 0 6px 6px;-moz-border-radius:6px 0 6px 6px;border-radius:6px 0 6px 6px;}
</style>

<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu" style="display: block; position: static; margin-bottom: 5px; *width: 180px;">
  <li><a href="#">Action</a></li>
  <li><a href="#">Another action</a></li>
  <li><a href="#">Something else here</a></li>
  <li class="divider"></li>
  <li class="dropdown-submenu">
    <a tabindex="-1" href="#">More options</a>
    <ul class="dropdown-menu">
      <li><a tabindex="-1" href="#">Second level</a></li>
      <li class="dropdown-submenu">
        <a href="#">More..</a>
        <ul class="dropdown-menu">
        	<li><a href="#">3rd level</a></li>
        	<li><a href="#">3rd level</a></li>
        </ul>
      </li>
      <li><a href="#">Second level</a></li>
      <li><a href="#">Second level</a></li>
    </ul>
  </li>
</ul>