Untitled

dabblet.css

body {
background: #f06;
}
@font-face {
font-family: 'Josefin Sans';
src: url(http://fonts.googleapis.com/css?family=Josefin+Sans);
}
.stitched_element {
font-family: Helvetica;
border: 2px dashed  #333;
box-shadow: 0 0 0 8px #ff0030;
background: #DDD;
padding:10px;
text-align: center;
color: #666;
width: 300px;
margin: 0 auto;
}

dabblet.html

<h1 class="stitched_element">dsdsdsd</h1>

settings.json

{"view":"split-vertical","seethrough":"","prefixfree":"1","page":"css"}