<html>
<head>
<title>Bootstrap 实例 - 可取消的警告（Dismissal Alerts）</title>
<link href="https://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
<script src="https://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="https://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
</head>
<body>
<div class="alert alert-success alert-dismissable">
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">
×
</button>
成功！很好地完成了提交。
</div>
<div class="alert alert-info alert-dismissable">
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">
×
</button>
信息！请注意这个信息。
</div>
<div class="alert alert-warning alert-dismissable">
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">
×
</button>
警告！请不要提交。
</div>
<div class="alert alert-danger alert-dismissable">
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">
×
</button>
错误！请进行一些更改。
</div>
</body>
</html>