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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>Animated Alerts</h2> <p>The .fade and .show classes adds a fading effect when closing the alert message.</p> <div class="alert alert-success alert-dismissible fade show"> <button type="button" class="close" data-dismiss="alert">×</button> <strong>Success!</strong> This alert box could indicate a successful or positive action. </div> <div class="alert alert-info alert-dismissible fade show"> <button type="button" class="close" data-dismiss="alert">×</button> <strong>Info!</strong> This alert box could indicate a neutral informative change or action. </div> <div class="alert alert-warning alert-dismissible fade show"> <button type="button" class="close" data-dismiss="alert">×</button> <strong>Warning!</strong> This alert box could indicate a warning that might need attention. </div>