The first commented line is your dabblet’s title

dabblet.css

/**
 * The first commented line is your dabblet’s title
 */
.wrapper, section, aside {
	height: 200px;
}

.wrapper {
	background: #f3f3f3;
	width: 1200px;
	margin: 20px auto;
	display: flex;
	justify-content:space-between;
}

.wrapper-secondary {
	background: #dedede;
}

section {
	width: 732px;
	background: #bbb;
}

aside {
	background: #aeaeae;
	width: 408px;
}

dabblet.html

<div class="wrapper">
	<section>This is section with comments</section>
	<aside>Comments</aside>
</div>

<div class="wrapper wrapper-secondary">	
	<section>This is section without comments</section>	
</div>

dabblet.js

// alert('Hello world!');

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"all"}