JSFiddle - React, Tailwind, and code Playground

by Marcel Hochman

HTML

<div></div>

CSS

div {
  width: 150px;
  height: 150px;
  margin: 100px auto 0;
  border-radius: 100%;
  box-shadow: 0 0 0 12px #000,
              0 0 0 12px #0f0 inset,
              0 0 0 24px #000 inset,
              0 0 0 36px #0f0 inset,
              0 0 0 48px #000 inset,
              0 0 0 60px #0f0 inset,
              0 0 0 72px #000 inset,
              0 0 0 84px black inset;
}