~~~
style{
*{margin:0;padding:0}
.parent{
line-height: 50px;
background: powderblue;
list-style: none;
}
a{
text-decoration: none;
}
li {
float: left;
width: 100px;
text-align: center;
}
.row::after{
content:"";
display: table;
clear: both;
}
.drop{
position: relative;
}
.drop-content{
position: absolute;
width: 100px;
background: paleturquoise;
}
.none{
display: none;
}
.drop-content a{
display: block;
}
.drop:hover .drop-content{
display: block;
}
}
~~~
~~~
<body>
<ul class="row parent">
<li>
<a href="#">手机</a>
</li>
<li class="drop" id="test">
<a href="#">电脑</a>
<div class="drop-content none">
<a href="#">苹果手机</a>
<a href="#">小米手机</a>
<a href="#">华为手机</a>
</div>
</li>
<li>
<a href="#">平板</a>
</li>
</ul>
</body>
~~~
