JSFiddle - React, Tailwind, and code Playground

HTML

<h1 class="title">
  Hide me
</h1>

<p class="para">
  Hide me
</p>
<p class="para">
  Hide me
</p>
<p class="para">
  Hide me
</p>
<script src="https://code.jquery.com/jquery-3.6.3.min.js" integrity="sha256-pvPw+upLPUjgMXY0G+8O0xUf+/Im1MZjXxxgOcBQBXU=" crossorigin="anonymous"></script>

JavaScript

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