JSFiddle - React, Tailwind, and code Playground

by sc0rp10

HTML

<div class="foo"></div>

CSS

body {
    background-color: #333;
    padding: 30px;
}
.foo {
    background-color: #336699;
    width: 300px;
    height: 300px;
    border-radius: 100%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 20px #336699;
    margin: 20px;
}