<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://ajax.aspnetcdn.com/ajax/bootstrap/3.4.0/css/bootstrap.min.css">
<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.5.1.min.js"></script>
<script src="https://ajax.aspnetcdn.com/ajax/bootstrap/3.4.0/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>旗帜字形</h2>
<p>旗帜图标:<span class="glyphicon glyphicon-flag"></span></p>
<p>将图标标记为链接:
<a href="#">
<span class="glyphicon glyphicon-flag"></span>
</a>
</p>
<p>按钮上的旗帜图标:
<button type="button" class="btn btn-default btn-sm">
<span class="glyphicon glyphicon-flag"></span> 旗帜
</button>
</p>
<p>样式链接按钮上的标记图标:
<a href="#" class="btn btn-info btn-lg">
<span class="glyphicon glyphicon-flag"></span> 旗帜
</a>
</p>
</div>
</body>
</html>