JSFiddle - React, Tailwind, and code Playground

by jackwanders

HTML

<div id="wrapper">
    <div id="inside"></div>
</div>

CSS

#wrapper {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: grey;                
    }

#inside {
    position: absolute;
    width: 300px;
    height: 80%;
    top: 10%;
    left: 50%;
    margin-left: -150px;
    background: white;
    }