<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style type="text/css">
nav{
1000px;
height: 50px;
background: greenyellow;
}
ul{
margin: 0;
padding: 0;
}
li{
/*border: 1px solid red;*/
list-style: none;
float: left;
/*margin: 20px;*/
padding: 0 20px;
line-height: 50px;
}
li:hover{
background: royalblue;
}
</style>
</head>
<body>
<nav>
<ul>
<li>首页</li>
<li>家电</li>
<li>母婴</li>
<li>产品</li>
<li>联系我们</li>
</ul>
</nav>
</body>
</html>