实例
<h3>Example heading <span class="label label-default">New</span></h3>
可用的变体
用下面的任何一个类即可改变标签的外观。
<span class="label label-default">Default</span>
<span class="label label-primary">Primary</span>
<span class="label label-success">Success</span>
<span class="label label-info">Info</span>
<span class="label label-warning">Warning</span>
<span class="label label-danger">Danger</span>