bootstrap-Alerts

.alert-success、
.alert-info、
.alert-warning、
.alert-danger
.alert-dismissable 关闭的按钮

<div class="alert alert-success alert-dismissable">
	<button type="button" class="close" data-dismiss="alert"
			aria-hidden="true">
		&times;
	</button>
	<a class="alert-link" >
	成功！很好地完成了提交。
	</a>
</div>
<div class="alert alert-info alert-dismissable">
	<button type="button" class="close" data-dismiss="alert"
			aria-hidden="true">
		&times;
	</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">
		&times;
	</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">
		&times;
	</button>
	错误！请进行一些更改。
</div>