JSFiddle - React, Tailwind, and code Playground

HTML

<div id="startmenu" class="startmenu">CONTENT</div>
<footer id="taskbar" class="taskbar"><div id="startbutton" style="width:25px; height:25px;"><img src="start.png" style="width:25px; height:25px;"></img></div></footer>

CSS

#startmenu{
    display:none;
}
.startmenu {
    color:gray;
    width:400;
    height:650;
}

JavaScript

$( "#startbutton" ).click(function() {
      $( "#startmenu" ).toggle( "blind" );
    });