JSFiddle - React, Tailwind, and code Playground

HTML

<h2>123</h2>
<div>333</div>
<h2>123</h2>
<div>333</div>
<h2>123</h2>
<div>333</div>

CSS

h2+div {
  display: none;
}
h2:hover+div,
.show{
  display: block;
}

JavaScript

$('h2').click(function() {
    $(this).next().toggleClass('show');
  });