JSFiddle - React, Tailwind, and code Playground

by Soviut

HTML

<div id="blah">this is it</div>

CSS

#blah {
    position: relative;
    width: 200px;
    height: 150px;
    
    background: #CCC;
}

#blah:after {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 10px;
    margin: -10px;
    
    border: solid 2px red;
}