Question

我正在使用以下下拉列表：

CSS：

html{
    height:100%; 
}
body{
    height:30%;
    position: relative;

}
.dropdown-submenu {
    border-bottom: 1px solid #ccc;
}
#mn-wrapper {
  display: block;
  width: 100%;
  position: absolute;
    height: 100%;
}
.mn-sidebar {
    margin-left: 100px;
  display: block;
  position: relative;
  vertical-align:top;
  padding-bottom: 49px;
    background: #272930;
    width: 216px;
    z-index: 2;
}
#mn-cont {
  display:none;
    vertical-align: middle;     
    position: relative;
    padding: 1;
}
.container {
    margin-right: auto;
}
.cnt-mcont {
  background-color: #F6F6F6;
    position: absolute;
  color: inherit;
  font-size: 13px;
  font-weight: 200;
  line-height: 21px;
  padding: 0;
  margin-top: 0;
    height: 55vh;
    width: 900px;
}
.mn-sidebar .mn-toggle {
  display: none;
  padding: 10px 0;
  text-align: center;
    cursor: pointer;
}
.mn-vnavigation {
  margin: 0 0 0 0;
  padding: 0;
  border-top: 1px solid #1a1c20;
    border-bottom: 1px solid #2f323a;
}
.mn-vnavigation li a {
  border-top: 1px solid #32353e;
  border-bottom: 1px solid #1a1c20;
  display: block;
  padding: 14px 18px 13px 15px;
  color: #fff;
  text-decoration: none;
  font-size: 12px;
  font-weight: 300;
  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.3);
    white-space: nowrap;
}
.dropdown-submenu >
.dropdown-menu {
    top: 0;
  left: 100%;
  margin-top: -6px;
  margin-left: -1px;
  height: 55vh;
  width: 216px;
  background: #272930;
}
.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: #ccc;
    margin-top: 5px;
    margin-right: -10px;
}
.dropdown-submenu:hover > a:after {
    border-left-color: #fff;
}
.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;
}
ul {
    list-style: none;
}
ul.dropdown-menu.parent {
  margin-top: -1px;
}
.bottom-mn {
    bottom:0px;         
    position:absolute;
    width:100%;
}

HTML：

</br><//br></br></br>

<div id="mn-wrapper">
    <div class="mn-sidebar">
        <div class="mn-toggle"><i class="fa fa-bars"></i></div>
        <div class="mn-navblock">
            <ul class="mn-vnavigation">
                <li class="dropdown-submenu active">
                    <a tabindex="-1" href="#">Client Advice</a>
            <ul class="dropdown-menu">
                <li><a tabindex="-1" href="#">Pre-advice</a></li>
              <li><a href="#">Strategy & Technical</a></li>
              <li><a href="#">Research</a></li>
              <li class="dropdown-submenu active">
                <a href="#">APL & Products</a>
                <ul class="dropdown-menu parent">
                    <li style=" border-bottom: 1px solid #ccc;">
                                        <a href="#">Approved Product List
                                            <span aria-hidden="true" class="glyphicon glyphicon-plus pull-right"></span>
                                            <span aria-hidden="true" class="glyphicon glyphicon-minus pull-right" style="display:none;"></span>
                                        </a>
                                    <ul class="child">
                                        <li style="padding:10px 15px; color:white;">Platforms</li>
                    <li style="padding: 10px 15px; color:white;">Managed Funds</li>
                    <li style="padding: 10px 15px; color:white;">Wealth Protection</li>
                    <li style="padding: 10px 15px; color:white;">Listed Securities</li>
                    <li style="padding: 10px 15px; color:white;">Wealth Protection</li>
                    <li style="padding: 10px 15px; color:white;">Listed Securities</li>
                    <li style="padding: 10px 15px; color:white;">Listed Securities</li>
                  </ul>
                                </li>
                <li style=" border-bottom: 1px solid #ccc;"><a href="#">Model Portfolios</a></li>
                <li style=" border-bottom: 1px solid #ccc;"><a href="#">Non-approved Products</a></li>
             </ul>
           </li>
           <li><a href="#">Implementation</a></li>
           <li><a href="#">Review</a></li>
           <li><a href="#">Execution Only</a></li>
         </ul>
       </li>
       <li><a href="#">Personal Development</a></li>
       <li><a href="#">Practice</a></li>
       <li><a href="#">News</a></li>
     </ul>
   </div>
   <div class="bottom-mn">
         <ul class="mn-vnavigation">
                <li>
                    <a href="#">My Favourite</a>
             </li>
             <li>
                    <a href="#">Most Popular</a>
             </li>
         </ul>
   </div>
</div>
<div class="container" id="mn-cont">
    <div class="cnt-mcont">
        <h1>Title Page</h1>
    </div>
</div>
</div>
</div>

JS：

$('.child').hide(); //Hide children by default
$('.parent').children().click(function () {
    event.preventDefault();
    $(this).children('.child').slideToggle('slow');
    $(this).find('span').toggle();
});

http://codepen.io/anon/pen/RWRdWj

是否可以获得子菜单（例如，当您将鼠标悬停在APL和产品上时，我希望第3级子菜单显示在APL和产品之前而不是顶部）。有可能吗？

Answer 1

试试这个example

您可以在.third-menu

上添加自定义课程<ul class="dropdown-menu parent third-menu">来解决此问题

并将此规则添加到新的css类：

.third-menu{
    position: relative;
    top: -50px!important;
}

第一个规则将相对于<a href="#">APL & Products</a>定位子菜单，第二个规则将使其与左侧菜单悬停项目内联，即 APL＆amp;产品的

需要帮助修复3级下拉菜单

1 个答案: