JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li class="special">1</li>
    <li class="special">2</li>
    <li class="special">3</li>
    <li></li>
    <li></li>
    <li></li>
</ul>

JavaScript

$('ul li.special:last').css('color','red');