JSFiddle - React, Tailwind, and code Playground

HTML

<h1 class="title">
  Make me green
</h1>

<p class="para">
  Make me red
</p>
<p class="para">
  Me red too
</p>
<p class="para">
  Also me
</p>
<script
  src="https://code.jquery.com/jquery-3.7.1.min.js"
  integrity="sha256-/JqT3SQfawRcv/BIHPThkBvs0OEvtFFmqPF/lYI/Cxo="
  crossorigin="anonymous"></script>

JavaScript

$('.title').css("color", "green");
$('.para').css("color", "red");