JSFiddle - React, Tailwind, and code Playground

HTML

<section class="column">
    <p> Some Test </p>
    <p> Some Test </p>
    <p> Some Test </p>
</section>

<section class="column">
    <p> Some More Test </p>
    <p> Some More Test </p>
    <p> Some More Test </p>
</section>

<section class="something else">
    <p> Some More Test </p>
    <p> Some More Test </p>
    <p> Some More Test </p>
</section>

CSS

.column { background:white; border:1px solid black; margin:10px 0 10px 0; }
.column:last-child { background:red; }