<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 模板</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<h1>Hello, world!</h1>
<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.slim.min.js"></script>
<script src="js/bootstrap.min.js"></script>
</body>
</html>
<button type="button" class="btn btn-default">
<span class="glyphicon glyphicon-sort-by-order-alt"> </span>
</button>