JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <div class="centerBoxContentsFeatured">one</div>
    <div class="centerBoxContentsFeatured">two</div>
    <div class="centerBoxContentsFeatured">three</div>
    <div class="centerBoxContentsFeatured">last</div>
</div>

CSS

div.centerBoxContentsFeatured:last-child {
    color: red;
}