<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
ul li{
list-style:none;
}
这块给xiala定义宽高
.xiala{
width:200px;
height:100px;
background:pink;
position:relative;
}
这块给xianshi定义宽高
.xianshi{
width:200px;
height:100px;
background:pink;
position:absolute;left:0;top:100px;
display:none;
}
用伪类来实现下拉
.xiala:hover>.xianshi{
display:block;
}
.xianshi>ul{
float:right;
width:200px;
}
.xianshi>ul>li{
margin-top:2px;
background:red;
}
</style>
</head>
<body>
<div class="xiala">
<div class="xianshi">
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
</ul>
</div>
<div>
</body>
</html>