JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box">
    <div class="box_item">Lorem ipsum dolor sit amet.</div>
    <div class="box_item">Mollitia nisi, alias illo? Alias.</div>
    <div class="box_item">Commodi mollitia aliquam est sequi?</div>
    <div class="box_item box_item_1">Possimus magnam repellat dicta odio.</div>
    <div class="box_item">Pariatur modi error repellendus minus.</div>
</div>

JavaScript

[...document.querySelectorAll('.box_item')].map(e=>(e.classList.contains('box_item_1')) ? e.style.color='red' : '' );