JSFiddle - React, Tailwind, and code Playground

HTML

<h1 id="hover">Hover over me</h1>
<div>Hi</div>
<div id="squash">
  <img src="http://askflorine.com/wp-content/uploads/2013/10/temp_quash.jpg" width="100%">
</div>

CSS

#squash {
  display: none;
}

#hover:hover ~ #squash {
  display: block;
}