JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
<article class="example">111</article>
<article class="example">111</article>
<article class="example">111</article>
<article class="example">111</article>
<section>content</section>
</div>

CSS

.parent .example{ background-color: red;}
.parent .example:last-child{background-color: yellow;}