JSFiddle - React, Tailwind, and code Playground

HTML

<div class="carousel-inner">
     <h2>I'm div 1</h2>
    <p>lorem ipsum dolor sit amet
    </p>
</div>
<div class="carousel-inner">
    <h2>I'm div 2 and I contain an "aside" element</h2>
    <aside>blah blah blah</aside>
    <p>lorem ipsum dolor sit amet
    </p>
</div>
<div class="carousel-inner">
     <h2>I'm div 3</h2>
    <p>lorem ipsum dolor sit amet
    </p>
</div>

CSS

div.withaside {color:#f60;}

JavaScript

$(document).ready( function(){
    $('aside').each(function(){
        $(this).parents('.carousel-inner').addClass('withaside');
    });
} )