JSFiddle - React, Tailwind, and code Playground

HTML

<div style="background-color: red">
   <ul class = "myClass">
      <li>CCD</li>
      <li class = "active">BCA</li>
      <li>ABC</li>
   </ul>
</div

JavaScript

$('ul.myClass li.active').css('background-color', 'blue');