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<html lang="en"><head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css"> <script src="https://cdn.jsdelivr.net/npm/jquery@3.7.1/dist/jquery.slim.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/js/bootstrap.bundle.min.js"></script></head><body><div class="container"> <h2>Alerts</h2> <p>The button with class="close" and data-dismiss="alert" is used to close the alert box.</p> <p>The alert-dismissible class adds some extra padding to the close button.</p> <div class="alert alert-success alert-dismissible"> <button type="button" class="close" data-dismiss="alert">×</button> <strong>Success!</strong> This alert box could indicate a successful or positive action. </div></div></body></html>