layout

dabblet.css

div {opacity:0;animation:5s hide 1 ;}
@keyframes hide {
0%,80% {opacity:1;}
100% {opacity:0;}
}




/* layout */
html, body {height:100%;width:100%;display:table;border-spacing:0;background:orange;margin:0;}
div {display:table-cell;vertical-align:middle;text-align:center;background:rgba(0,0,0,0.3);}

section {position:absolute;top:0;left:0;opacity:1;animation :show 5s 1;padding:1em;}
@keyframes show {
0%,80% {opacity:0;}
100% {opacity:1;}
}

dabblet.html

<div>
	<h1>Salut le monde !</h1>	
	<img src="http://lorempixel.com/200/200/people" />
	<p>rafraichissez la page pour relancer l'animation.</p>
</div>
<section>
<h1>HTML Ipsum Presents</h1>
	       
<p><strong>Pellentesque habitant morbi tristique</strong> senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. <em>Aenean ultricies mi vitae est.</em> Mauris placerat eleifend leo. Quisque sit amet est et sapien ullamcorper pharetra. Vestibulum erat wisi, condimentum sed, <code>commodo vitae</code>, ornare sit amet, wisi. Aenean fermentum, elit eget tincidunt condimentum, eros ipsum rutrum orci, sagittis tempus lacus enim ac dui. <a href="#">Donec non enim</a> in turpis pulvinar facilisis. Ut felis.</p>

<h2>Header Level 2</h2>
	       
<ol>
   <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
   <li>Aliquam tincidunt mauris eu risus.</li>
</ol>

<blockquote><p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus magna. Cras in mi at felis aliquet congue. Ut a est eget ligula molestie gravida. Curabitur massa. Donec eleifend, libero at sagittis mollis, tellus est malesuada tellus, at luctus turpis elit sit amet quam. Vivamus pretium ornare est.</p></blockquote>

<h3>Header Level 3</h3>

<ul>
   <li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
   <li>Aliquam tincidunt mauris eu risus.</li>
</ul>

<pre><code>
#header h1 a { 
	display: block; 
	width: 300px; 
	height: 80px; 
}
</code></pre>
</section>

dabblet.js

// alert('Hello world!');

settings.json

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