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<!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.jsdelivr.net/npm/bootstrap@5.1.2/dist/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <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>