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<html><head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script></head><body><div class="container"> <h2>Dropdowns</h2> <p>The .dropdown-header class is used to add headers inside the dropdown menu:</p> <div class="dropdown"> <button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown">Tutorials <span class="caret"></span></button> <ul class="dropdown-menu"> <li class="dropdown-header">Dropdown header 1</li> <li><a href="#">HTML</a></li> <li><a href="#">CSS</a></li> <li><a href="#">JavaScript</a></li> <li class="divider"></li> <li class="dropdown-header">Dropdown header 2</li> <li><a href="#">About Us</a></li> </ul> </div></div>