The first commented line is your dabblet’s title

dabblet.css

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

hr {
border: none;
margin-bottom: 0;
display: block;
-webkit-margin-before: 0.5em;
-webkit-margin-after: 0.5em;
-webkit-margin-start: auto;
-webkit-margin-end: auto;
}

hr:after {
content: "* * *";
font-size: 1.75rem;
font-family: sans-serif;
font-weight: 700;
line-height: .857142857;
letter-spacing: .2em;
color: rgba(0,0,0,0.3);
display: block;
text-align: center;
margin-top: 2rem;
margin-bottom: 1.75rem;
}

dabblet.html

<hr>
</hr>

dabblet.js

// alert('Hello world!');

settings.json

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