JSFiddle - React, Tailwind, and code Playground

HTML

<div>wihte</div>
<div>black</div>
<div>wihte</div>
<div>black</div>
<div>wihte</div>
<div>black</div>
<div>wihte</div>
<div>black</div>

CSS

div:nth-child(2n) {
    background: black;
    color: white;
}