JSFiddle - React, Tailwind, and code Playground
HTML
<div class="descendants" style="width:500px;">div (current element)
<p>p (child) <span>span (grandchild)</span>
</p>
<p>p (child) <span>span (grandchild)</span>
</p>
</div>
CSS
.descendants * {
display: block;
border: 2px solid lightgrey;
color: lightgrey;
padding: 5px;
margin: 15px;
}
JavaScript
// DOM traversing find() method
$("div").find("span").css({"color":"red","border":"2px solid red"});