JSFiddle - React, Tailwind, and code Playground

HTML

<div class="ts"></div>

CSS

.ts {
height: 100px;
width: 100px;
box-shadow: inset 0 10px 0 0 #f00,inset 10px 0 0 0 #f00,inset -10px 0 0 0 #f00, 0 20px 0 #ddd;
}