The first commented line is your dabblet’s title

dabblet.css

/**
 * The first commented line is your dabblet’s title
 */
.hi{
	background-color:red;
	width: 200px;
	height: 200px	
}
background: #f06;
background: linear-gradient(45deg, #f06, yellow);
min-height: 100%;

dabblet.html

<div class="hi">
	test
</div>

dabblet.js

// alert('Hello world!');

settings.json

{"view":"split-vertical","fontsize":"70","seethrough":"","prefixfree":"","page":"html"}