gossi/dabblet.css

## dabblet.css
/**
 * CSS Animations (auto values)
 */
#anim {
	border: 1px solid;
	padding: 3px;
	background-color: green;
	color: white;
	width: auto;
	transition: width 1s;
}

#anim:hover {
	width: 50%;
}

## dabblet.html
<!-- content to be placed inside <body>…</body> -->
<div id="anim">
animate to auto values
</div>

## settings.json
{"view":"split-vertical","fontsize":"100","seethrough":"","prefixfree":"1","page":"all"}
	/**
	* CSS Animations (auto values)
	*/
	#anim {
	border: 1px solid;
	padding: 3px;
	background-color: green;
	color: white;
	width: auto;
	transition: width 1s;
	}

	#anim:hover {
	width: 50%;
	}
	<!-- content to be placed inside <body>…</body> -->
	<div id="anim">
	animate to auto values
	</div>