JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <a class="button">Click me to show or hide</a>
</div>

<div id="box">
  Hello world!
</div>

CSS

.button {
padding:3px;
background-color: blue;
color:white;
cursor: pointer;
}

#box {
  width: 300px;
  height: 300px;
  padding: 10px;
  background-color:yellow;
}

JavaScript

$('.button').on('click', function() {
	$('#box').toggle()
});