代码示例:(标识:bs_button_active)
<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/js/bootstrap.min.js"></script>
</head>
<body>

<div style="padding:20px;">
  <h2>按钮状态</h2>
  <button type="button" class="btn btn-primary">主要按钮</button>
  <button type="button" class="btn btn-primary active">活动的主要按钮</button>
  <button type="button" class="btn btn-primary" disabled>禁用的主要按钮</button>
  <a href="#" class="btn btn-primary disabled">禁用链接</a>
</div>

</body>
</html>
运行结果: