CSS鼠标滑过显示二级目录效果
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS鼠标滑过显示二级目录效果</title>
<style>
.ermulu{
display:none;
position:absolute;
width:200px;
height:50px;
background:rgba(0,0,0,0.2);
border-radius:10px;
border:2px solid #000;
}
ul{
display:flex;
}
li:first-child{
width:200px;
background:red;
list-style:none;
padding:20px 20px;
}
li:nth-child(2){
width:200px;
background:black;
color:white;
}
ul li:hover .ermulu{
display:block;
}
</style>
</head>
<body>
<ul>
<li>5555
<div>
<ul>
<li>44444</li>
<li>44444</li>
<li>44444</li>
</ul>
</div>
</li>
<li>55555
<div>bbbbb</div>
</li>
</ul>
</body>
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