The first commented line is your dabblet’s title

dabblet.css

/**
 * The first commented line is your dabblet’s title
 */
 
body {
	background: black linear-gradient(left, transparent, #f06);
}

div {
	margin: 80px auto;
	height: 60px;
	width: 100%;
	background: black linear-gradient(right, transparent, #f06);
}

dabblet.html

<div></div>

settings.json

{"view":"split","prefixfree":"1","page":"css"}