JSFiddle - React, Tailwind, and code Playground

HTML

<div id="foo">
</div>

CSS

#foo {
  background: rgb(200, 240, 255);
  border: 5px solid red;
  width: 150px;
  height: 100px;
}

JavaScript

var foo = document.getElementById("foo");


  foo.onclick = function() {
    foo.requestFullscreen();
  };