JSFiddle - React, Tailwind, and code Playground
HTML
<div class="siblings">div (parent)
<p>p</p> <span>span</span>
<h2>h2</h2>
<h3>h3</h3>
<p>p</p>
<h2>h2</h2>
</div>
CSS
.siblings * {
display: block;
border: 2px solid lightgrey;
color: lightgrey;
padding: 5px;
margin: 15px;
}
JavaScript
// jquery traversing nextUntil() method
$("h2").nextUntil('h2').css({"color":"red","border":"2px solid red"});