JSFiddle - React, Tailwind, and code Playground

HTML

<div>This should change to a Paragraph</div>

<div class="myClass">This should not</div>

<div class="">Neither should this</div>

CSS

p {background-color:#333; color:#ffff; font-weight:90px }

div {background-color:#c00; color:#fff; margin-top:16px}

JavaScript

$('div.myClass').contents().unwrap().wrap('<p/>');