JSFiddle - React, Tailwind, and code Playground

by Stefan Zamfira

HTML

<div>
  <span>x</span>
</div>

CSS

div {
  font-weight: bold;
  width: 600px;
  height: 600px;
}
 span {
   display: block;
   width: 20px;
   height: 20px;
   position: absolute;
   margin: auto;
   top: 0;
   right: 0;
   bottom: 0;
   left: 0;
 }