JSFiddle - React, Tailwind, and code Playground

by Matt Felten

HTML

<div id="wrap">
    <div id="inner"></div>
</div>

CSS

#wrap {
    width: 250px;
    height: 250px;
    position: fixed;
    top: 50%;
    left: 50%;
    margin: -125px 0 0 -125px;
    background: red;
}

#inner {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: blue;
}