动态实现简单的二级菜单
当鼠标放到一级标签上时，鼠标会变成小手的形状 展示二级菜单，源码如下，复制即可直接使用
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {margin: 0; padding: 0;}
ul { list-style: none;}
div {
width: 100%;
height: 50px;
background-color: #ccc;
}
.first {
width: 100px;
height: 50px;
float: left;
margin-right: 70px;
/* background-color: pink; */
cursor: pointer;
text-align: center;
line-height: 50px;
border-radius: 15px;
}
.second li{
width: 80px;
height: 50px;
background-color: blue;
border-radius: 50%;
margin-top: 10px;
}
.second {
display: none;
}
.first:hover .second{
display: block;
cursor: pointer;
}
.first:hover {
background-color: pink;
}
</style>
<body>
<div>
<ul>
<li class="first">
<p>一级标签</p>
<ul class="second">
<li>二级标签</li>
<li>二级标签</li>
</ul>
</li>
<li class="first">
<p>一级标签</p>
<ul class="second">
<li>二级标签</li>
<li>二级标签</li>
</ul>
</li>
</ul>
</div>
</body>
</html>
总结