JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<body>
    <div id="outer" style="min-width: 2000px; min-height: 1000px; background: #3e3e3e;">
        <div id="inner" style="left: 1%; top: 45px; width: 50%; height: auto; position: absolute; z-index: 1;">
            <div style="background: #efffef; position: absolute; height: 400px; right: 0px; left: 0px;"></div>
        </div>
    </div>
</body>
</html>