简单的导航
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
*{margin:0;padding:0;}
ul,li{
list-style:none;
}
a{
text-decoration: none;
}
nav{
600px;
margin:50px auto;
}
nav ul{
100%;
display:flex;
}
nav li{
flex:1;
text-align: center;
60px;
margin-right:10px;
}
.item-list{
display:block;
color: #0099fb;
font-size: 16px;
position: relative;
}
.item-list:before{
position:absolute;
left:0;
top:-4px;
100%;
height:2px;
content:"";
background:#fff;
}
.item-list:after{
position:absolute;
left:0;
bottom:-4px;
100%;
height:2px;
content:"";
background:#fff;
}
nav li a:hover{
color:red;
}
nav li a:hover::before{
/*position:absolute;
left:0;
top:-4px;
100%;
height:2px;
content:"";*/
background:red;
}
nav li a:hover::after{
/*position:absolute;
left:0;
bottom:-4px;
100%;
height:2px;
content:"";*/
background:red;
}
</style>
</head>
<body>
<nav>
<ul>
<li>
<a class="item-list">指南</a>
</li>
<li>
<a class="item-list">组件</a>
</li>
<li>
<a class="item-list">实践</a>
</li>
<li>
<a class="item-list">概览</a>
</li>
<li>
<a class="item-list">iView Cli</a>
</li>
<li>
<a class="item-list">GitHub</a>
</li>
</ul>
</nav>
</body>
</html>