JSFiddle - React, Tailwind, and code Playground

HTML

<div>
<span class = 'letter'>
  H
</span>
</div>

CSS

div {
  background-color: blue;
  color: red;
  padding-top: 50%;
  padding-left: 50%;
  height: 380px;
  width: 288px;
  font-size: 50px;
}

.letter:hover {
  color: black;
}