html运行实例（bs_utility_sr）-搜寻教程库

代码示例：（标识：bs_utility_sr）

<!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.bundle.js"></script>
</head>
<body>

<div class="p-4">
  <h2>屏幕阅读器</h2>
  <p>使用 .visually-hidden 类可在所有设备上隐藏元素，屏幕阅读器除外：</p>
  <span class="visually-hidden">除了屏幕阅读器，我将隐藏在所有屏幕上。</span>
</div>

</body>
</html>