JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

div {
    margin: 100px;
    height: 100px;
    width: 100px;
    border: 1px solid #aaa;
    border-radius: 50%;
    box-shadow: inset 0 0 5px tomato, 0 0 5px black;
}