JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">

    I have a box shadow.

</div>

CSS

#container { 
width: 100%;
    height: 100%;
    background-color: black;
    -moz-box-shadow: 3px 3px 5px red;
    -webkit-box-shadow: 3px 3px 5px red;
    box-shadow: 3px 3px 5px red;
}