理解弹性盒子
效果图
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>理解弹性盒子</title>
<style>
* {
margin: 0;
padding: 0;
}
li {
list-style: none;
}
a {
text-decoration: none;
color: #aaa
}
a:hover {
color: red;
text-decoration: underline;
}
.myjd a:hover {
color: red;
text-decoration: underline;
background-color: #fff;
}
.myjd:hover ul {
background-color: #fff;
display: block;
}
nav {
height: 50px;
margin: 0 auto;
background: #ccc;
}
nav>ul {
box-sizing: border-box;
display: flex;
justify-content: center;
align-items: center;
}
nav>ul>li {
position: relative;
margin: 10px 20px;
}
.jd-group ul {
position: absolute;
background: #fff;
left: 0px;
display: none;
}
.jd-group ul>li {
padding: 10px 10px;
width: 90px;
}
</style>
</head>
<body>
<nav>
<ul>
<li><a href="">我的订单</a></li>
<li class="myjd">
<a href="">我的京东</a>
<div class="jd-group">
<ul>
<li><a href="">我的京豆</a></li>
<li><a href="">我的优惠券</a></li>
<li><a href="">我的白条</a></li>
<li><a href="">我的理财</a></li>
</ul>
</div>
</li>
<li><a href="">京东会员</a></li>
<li><a href="">企业采购</a></li>
<li><a href="">客户服务</a></li>
<li><a href="">网站导航</a></li>
<li><a href="">手机京东</a></li>
<li><a href="">网站无障碍</a></li>
</ul>
</nav>
</body>
</html>