JSFiddle - React, Tailwind, and code Playground

by 규연 황

HTML

<div class="box"></div>

CSS

.box {
  width: 200px;
  height: 100px;
  background: #000000;
  box-shadow: 
   inset 5px 5px 0 0 red,
   inset 10px 10px 0 0 green,
   inset 15px 15px 0 0 yellow,
   5px 5px 0 0 red,
   10px 10px 0 0 green,
   15px 15px 0 0 yellow;
   ;
}