Flexible quarter ellipse

dabblet.css

/**
 * Flexible quarter ellipse
 */

div {
	display: inline-block;
	width: 16em;
	height: 10em;
	margin: 1em;
	background: #fb3;
	border-radius: 11% 0 0 0;
}

div:nth-of-type(2) { border-radius: 10% 10%/100% 0 0; }
div:nth-of-type(3) { border-radius: 0 0 100% 0; }
div:nth-of-type(4) { border-radius: 0 0 0 100%; }

dabblet.html

<div></div>
<div></div>
<div></div>
<div></div>

dabblet.js

// alert('Hello world!');

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"css"}