JSFiddle - React, Tailwind, and code Playground

by gdanko

HTML

<html>
<head>
</head>
<body>
    <div id="blue-box"></div>
</body>

CSS

#blue-box {
    position : absolute;
    background-color : blue;
    top : 0px;
    left : 0px;
    bottom : 20px;
    right : 20px;
    zIndex : 10;
}