JSFiddle - React, Tailwind, and code Playground

HTML

<button class="run-css">CSS slideToggle</button>

<div class="cont">Toggle this div</div>

CSS

.cont {
    width: 100px;
    height: 100px;
    border: 1px #CCC solid;
    background-color: #EEE;
    padding: 5px;
}

JavaScript

$('.run-css').click(function() {
    $('.cont').toggle();
});