JSFiddle - React, Tailwind, and code Playground

HTML

<div id="circle"></div>

CSS

#circle {
    	width: 100px;
    	height: 100px;
    	background: red;
    	-moz-border-radius: 50px;
    	-webkit-border-radius: 50px;
    	border-radius: 50px;
    	border:4px solid blue;