CSS浮动实线横向导航
<!DOCTYPE html >
<html>
<head>
<meta charset="utf-8">
<title>员工信息管理系统</title>
<link rel="shortcut icon" type="image/x-icon" href="images/logo.png">
<style type="text/css">
ul li{list-style: none;width:100px;height:40px;line-height:40px;text-align: center;background-color: #ccc;margin:0px 1px;float:left;}
div{width: 200px ; height:200px; background-color: pink;float:left;}
.clear{clear:both;}
</style>
</head>
<body>
<<ul>
<li>html</li>
<li>css</li>
<li>JS</li>
<li>jquery</li>
<li>php</li>
</ul>
<div class="clear"></div>
<div>div1</div>
<div>div2</div>
<div>div3</div>
</body>
</html>