JSFiddle - React, Tailwind, and code Playground

HTML

<div class="item"><p>TEST TEST</p></div>
<div class="item"><p>TEST TEST</p></div>
<div class="item"><p>TEST TEST</p></div>
<div class="item"><p>TEST TEST</p></div>
<div class="item"><p>TEST TEST</p></div>
<div class="item"><p>TEST TEST</p></div>

CSS

div.item:nth-of-type(3) {
    color: #f00;
}