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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> <style> /* Icon when the collapsible content is shown */ .btn:after { font-family: "Glyphicons Halflings"; content: "\e114"; float: right; margin-left: 15px; } /* Icon when the collapsible content is hidden */ .btn.collapsed:after { content: "\e080"; }</style></head><body><div class="container"> <h2>Simple Collapsible</h2> <button type="button" class="btn btn-lg btn-info collapsed" data-toggle="collapse" data-target="#demo">Simple collapsible</button> <div id="demo" class="collapse"> Lorem ipsum dolor sit amet, consectetur adipisicing elit,