JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

* {
    padding: 0;
    margin: 0;
}
html, body {
    width: 100%;
    height: 100%;
    background: black;
}
div {
    width: 100%;
    height: 100%;
    background: -webkit-radial-gradient(center, cover, #000 90%, #fff 100%);
}