JSFiddle - React, Tailwind, and code Playground

HTML

<a class="button" href="">Click Here</a>
<div class="expander">
    <h1>Hello</h1>
</div>

CSS

.expander{
    border: solid red 1px;
    height: 1000px;
    display: none;
}

JavaScript

$('.button').click(function(e){
  e.preventDefault();
  $('.expander').slideToggle();
});