引导标签
标签非常适合为页面提供计数，提示或其他标记。
示例
使用class.label来显示标签，然后尝试运行以下代码
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet">
<script src = "/scripts/jquery.min.js"></script>
<script src = "/bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<h1>Tutorials
<span class = "label label-default">
150
</span>
</h1>
<h2>Quiz
<span class =" label label-default">
90
</span>
</h2>
</body>
</html>