JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

div {
  margin: 30px;
  height: 100px;
  width: 100px;
  position:relative;
  overflow: hidden;
  padding: 7px 7px 0 7px;
}
div:before {
  position: absolute; 
  content: ' '; 
  top: 7px; 
  right: 7px; 
  bottom: -7px;
  left: 7px; 
  background-color: transparent; 
  box-shadow: 0 0 5px black;
  border: 1px solid red;
}