JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

#circle {
	width: 400px;
	height: 400px;
	background: red;
    -webkit-border-top-left-radius: 80px;
    -webkit-border-top-right-radius: 160px;
    -webkit-border-bottom-right-radius: 200px;
    -webkit-border-bottom-left-radius: 200px;
	
}