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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="../../maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css"> <script src="../../ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"></script> <script src="../../maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script></head><body><div class="container"> <h2>Alerts</h2> <p>The a element 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"> <a href="#" class="close" data-dismiss="alert" aria-label="close">×</a> <strong>Success!</strong> This alert box could indicate a successful or positive action. </div> <div class="alert alert-info alert-dismissible"> <a href="#" class="close" data-dismiss="alert" aria-label="close">×</a> <strong>Info!</strong> This alert box could indicate a neutral informative change or action. </div> <div class="alert alert-warning alert-dismissible"> <a href="#" class="close" data-dismiss="alert" aria-label="close">×</a> <strong>Warning!</strong> This alert box could indicate a warning that might need attention. </div>