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<!DOCTYPE html> <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>Collapsible Panel</h2> <p>Click on the collapsible panel to open and close it.</p> <div class="panel-group"> <div class="panel panel-default"> <div class="panel-heading"> <h4 class="panel-title"> <a data-toggle="collapse" href="#collapse1">Collapsible panel</a> </h4> </div> <div id="collapse1" class="panel-collapse collapse"> <div class="panel-body">Panel Body</div> <div class="panel-footer">Panel Footer</div> </div> </div> </div> </div> </body> </html>
