仿制php.cn的导航
<!DOCTYLE html>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="css/font-awesome-4.7.0/css/font-awesome.min.css">
<title>导航条</title>
<style>
.header{width:100%;background-color:black;line-height:70px;}
.header-left{width:1200px;height:70px;float:left;}
.header-right{width:200px;height:70px;float:right;}
.clear{clear:both;}
a{text-decoration:none;color:#fff;margin-left:4px;}
.header a{display:inline-block;height:40px;width:90px;text-align:center;}
.header img{display:inline-block;}
.img1{ width:70px;height:70px;border-radius:50%;}
a:hover{color:red;border-bottom:5px solid green;}
</style>
</head>
<body>
<div class="header">
<div class="header-left">
<img src="img/logo.png" alt="hello" style="width:160px;height:70px;">
<a href="#">首页</a>
<a href="#">视频教程<i class=" fa fa-angle-down"></i></a>
<a href="#">社区问答</a>
<a href="#">编程词典</a>
<a href="#">手册下载</a>
<a href="#">工具下载</a>
<a href="#">类库下载</a>
<a href="#">工具下载</a>
<a href="#">特色课程</a>
<a href="#">菜鸟学堂</a>
</div>
<div class="header-right">
<a href="#"><i class=" fa fa-volume-up"></i></a>
<img class="img1" src="img/logo.png" alt="hello"/>
</div>
<div class="clear"></div>
</div>
</body>
</html>