JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

* {
  box-sizing: inherit;
}

html {
  box-sizing: border-box;
}
body {
  margin: 0;
  padding: 50px;
}

div {
  width: 200px;
  height: 100px;
  background: #eee;
  box-shadow: 0 0 0 5px red,
  0 0 0 10px yellow,
  0 0 0 15px green,
  0 0 0 20px violet;
}