JSFiddle - React, Tailwind, and code Playground

HTML

<div class="shadow"></div>

CSS

.shadow {
    width: 200px;
    height: 100px;
    margin: 50px auto;
    border: 1px solid #000;
    box-shadow: 0 2px 0px red inset;
    -webkit-box-shadow: 0 2px 0px red inset;
    -moz-box-shadow: 0 2px 0px red inset;
}