<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<!-- 处理低版本IE 4.0不考虑IE8 -->
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<!-- 移动端视口的设置 -->
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- 引入bootstrap.css -->
<link rel="stylesheet" href="css/bootstrap.css">
<script src="js/jquery-1.11.3.min.js"></script>
<script src="js/bootstrap.js"></script>
<style>
#login{
width:400px;
}
</style>
</head>
<body>
<div class="container">
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown">
Dropdown
<span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li><a href="#">Separated link</a></li>
</ul>
</div>
</div>
<br>
<br>
<div class="container">
<ul class="nav nav-tabs">
<li class="active"><a href="#">one</a></li>
<li><a href="#">two</a></li>
<li><a href="#">three</a></li>
</ul>
<br>
<ul class="nav nav-tabs" style="width:400px;">
<li class="active"><a href="#">one</a></li>
<li><a href="#">two</a></li>
<li><a href="#">three</a></li>
</ul>
<br>
<ul class="nav nav-tabs nav-justified" style="width:400px;">
<li class="active"><a href="#">one</a></li>
<li><a href="#">two</a></li>
<li><a href="#">three</a></li>
</ul>
<br>
<ul class="nav nav-tabs nav-tabs-justified">
<li class="active"><a href="#">one</a></li>
<li><a href="#">two</a></li>
<li><a href="#">three</a></li>
</ul>
<br>
<ul class="nav nav-pills">
<li class="active"><a href="#">one</a></li>
<li><a href="#">two</a></li>
<li><a href="#">three</a></li>
</ul>
</div>
</body>
<script>
/*
下拉菜单
属性
— data-*
— aria-*
— rolr
open 显示下拉菜单
dropdown-menu-right 下拉菜单右浮动
dropdown-header 下拉头部
divider 分割线
标签页
头部
— nav
— nav-tabs 不适合竖状展示
— nav-justified 端点对齐
— nav-tabs-justified
— nav-pills 圆角
— nav-stacked 竖状菜单
— 带下拉菜单的头部
*/
</script>
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