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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

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To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <section class="title-slide">
    <h1 id="text">Stellar&nbsp;alchemy.<br>Vanquish&nbsp;the&nbsp;Impossible.</h1>
</section>

<section>
    <div class="content">
        <p>The ash of stellar alchemy Hypatia. Two ghostly white figures in coveralls and helmets are soflty dancing tingling of the spine trillion quasar the ash of stellar alchemy Orion's sword venture another world, intelligent beings how far away muse
            about vanquish the impossible Flatland take root and flourish, billions upon billions consciousness intelligent beings, a still more glorious dawn awaits Drake Equation? Quasar encyclopaedia galactica a billion trillion, vanquish the impossible
            from which we spring rich in heavy atoms a very small stage in a vast cosmic arena Rig Veda.</p>
        <p>Network of wormholes venture. Paroxysm of global death Drake Equation, Orion's sword a mote of dust suspended in a sunbeam. Globular star cluster rich in mystery cosmic fugue as a patch of light finite but unbounded from which we spring birth.
            Explorations globular star cluster cosmic ocean not a sunrise but a galaxyrise Rig Veda gathered by gravity descended from astronomers are creatures of the cosmos. Prime number across the centuries, with pretty stories for which there's little
            good evidence vanquish the impossible encyclopaedia galactica quasar.</p>
    </div>
</section>
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CSS 

              
                @font-face {
	font-family: 'qanelas_soft_demoextrabold';
	src: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/13313/qanelassoftdemo-extrabold-webfont.eot');
	src: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/13313/qanelassoftdemo-extrabold-webfont.eot?#iefix') format('embedded-opentype'),
	url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/13313/qanelassoftdemo-extrabold-webfont.woff2') format('woff2'),
	url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/13313/qanelassoftdemo-extrabold-webfont.woff') format('woff'),
	url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/13313/qanelassoftdemo-extrabold-webfont.ttf') format('truetype'),
	url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/13313/qanelassoftdemo-extrabold-webfont.svg#qanelas_soft_demoextrabold') format('svg');
        font-weight: bold;
	font-style: normal;
}

body,
html {
    height: 100%;
    min-height: 100%;
}

body {
    background: #eee;
}

section {
    display: flex;
    justify-content: center;
    align-items: center;
}

h1 {
    color: #1a1a1a;
    font-size: 5em;
    font-family: qanelas_soft_demoextrabold, sans-serif;
    text-transform: uppercase;
    span {
        display: block;
        float: left;
    }
}

p {
    font-size: 1.2em;
    line-height: 1.6725;
}

.title-slide {
    height: 100vh;
    padding: 0 5vw;
}

.content {
    padding: 50px 25vw;
    background: #1a1a1a;
    color: #eee;
}
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JS 

              
                /**
 * recursively get all text nodes as an array for a given element
 */
function getTextNodes(node) {
  var childTextNodes = [];

  if (!node.hasChildNodes()) {
    return;
  }

  var childNodes = node.childNodes;
  for (var i = 0; i < childNodes.length; i++) {
    if (childNodes[i].nodeType == Node.TEXT_NODE) {
      childTextNodes.push(childNodes[i]);
    } else if (childNodes[i].nodeType == Node.ELEMENT_NODE) {
      Array.prototype.push.apply(childTextNodes, getTextNodes(childNodes[i]));
    }
  }

  return childTextNodes;
}

/**
 * given a text node, wrap each character in the
 * given tag.
 */
function wrapEachCharacter(textNode, tag) {
  var text = textNode.nodeValue;
  var parent = textNode.parentNode;

  var characters = text.split('');
  var elements = [];
  var i = 0;
  characters.forEach(function(character) {
    i++;
    var element = document.createElement(tag);
    var characterNode = document.createTextNode(character);

    element.appendChild(characterNode);

    parent.insertBefore(element, textNode);
  });

  parent.removeChild(textNode);
}

var str = document.getElementById("text");

var allTextNodes = getTextNodes(str);

// wrap each character in each text node thus gathered.
allTextNodes.forEach(function(textNode) {

  wrapEachCharacter(textNode, 'span');

});

var spans = str.children;
var spanList = [];

for (var i = 0; i < spans.length; i++) {
  spanList.push(spans[i]);
}
    
function getRandomArbitrary(min, max) {
    return Math.random() * (max - min) + min;
}

document.onscroll = function() {
  var i = 0;
  spanList.forEach(function(span) {
    i++;
    var dsoctop = document.onscroll.all ? iebody.scrollTop : pageYOffset;
    
    if( i % 2 ) {
        span.style.webkitTransform = "rotate(" + dsoctop/i/4 + "deg) translate3d(" + dsoctop/30 * i/30 + "px, " + dsoctop/30 * i/30 + "px, " + dsoctop * i + "px)";
    } else if( i % 5 ) {
        span.style.webkitTransform = "rotate(" + -dsoctop/i/2 + "deg) translate3d(" + -dsoctop/10 * i/10 + "px, " + -dsoctop/10 * i/10 + "px, " + dsoctop * i + "px)";
    } else {
        span.style.webkitTransform = "rotate(" + dsoctop/i/3+ "deg) translate3d(" + -dsoctop/20 * i/20 + "px, " + -dsoctop/20 * i/20 + "px, " + dsoctop * i + "px)";
    }

  });
}
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