JSFiddle - React, Tailwind, and code Playground

HTML

<div id="mpe">
    <p>text here</p>
</div>


<div id="hidden">
    <p> i was hidden</p>
</div>

CSS

#hidden{
    display:none;
    height:100px;
    width:100px;
    background-color:red;
}

JavaScript

$(document).ready(function(){ 
     if ($('#mpe').is(':visible')){ 
         //code for when MPE is visible here 
      $('#hidden').show();
     }
    });