<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>新浪</title>
<style>
.nav{
border-top: 3px solid #ff8500;
border-bottom: 1px solid #edeef0;
height: 41px;
background-color: #fcfcfc;
}
a{
height: 41px;
line-height: 37px;
font-size: 14px;
color: black;
text-decoration: none;
display: inline-block;
padding: 0 20px;
}
.nav a:hover{
height: 41px;
color: orange;
background-color: black;
}
</style>
</head>
<body>
<div class="nav">
<a href="#">设为首页</a>
<a href="#">手机新浪网</a>
<a href="#">移动客户端</a>
<a href="#">博客</a>
<a href="#">微博</a>
<a href="#">关注我</a>
</div>
</body>
</html>
总结：1、注意选择器显示的优先级，网页默认链接格式的优先级大于继承
2、选择链接的显示需要设置背景颜色不要设置成文字颜色