afarber · May 11, 2018 21:24
diff --git a/menu.html b/menu.html

 <!doctype html>
 <html lang="en">
 <head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>jQuery UI Menu - Categories</title>
  <link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
  <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
  <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
  <script>
  $( function() {
    $( "#menu" ).menu({
      items: "> :not(.ui-widget-header)"
    });
  } );
  </script>
  <style>
  .ui-menu { width: 200px; }
  .ui-widget-header { padding: 0.2em; }
  </style>
 </head>
 <body>
 
 <ul id="menu">
  <li class="ui-widget-header"><div>Category 1</div></li>
  <li><div>Option 1</div></li>
  <li><div>Option 2</div></li>
  <li><div>Option 3</div></li>
  <li class="ui-widget-header"><div>Category 2</div></li>
  <li><div>Option 4</div></li>
  <li><div>Option 5</div></li>
  <li><div>Option 6</div></li>
 </ul>
 
 
 </body>
 </html>