Background Image Options (Size)

dabblet.css

/**
 * Background Image Options (Size)
 */
body {
	background: #fff;
}
h2, h3 {
	display:inline-block;
	margin:0 20px;
	width: 200px;
	height: 250px;
	background-image: url("https://github.com/images/error/octocat_sad.gif");
	background-position: center center;
	background-repeat: no-repeat;
}
h2 {
	background-color: #34a;
	background-size:contain;
}
h3 {
	background-color: #a34;
	background-size:150px auto;
}

dabblet.html

<h2></h2>
<h3></h3>

settings.json

{"view":"separate","seethrough":"","prefixfree":"1","page":"all"}