thomasmery/dabblet.css

## dabblet.css
#root {
  position: relative;
  height: 200px;
  background: blue;
}

#root::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 20px;
  width: 20px;
  height: 20px;
  background: red;
}

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

## dabblet.js
// alert('Hello world!');

## settings.json
{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"css"}
	#root {
	position: relative;
	height: 200px;
	background: blue;
	}

	#root::before {
	content: "";
	position: absolute;
	left: 20px;
	top: 20px;
	width: 20px;
	height: 20px;
	background: red;
	}