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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

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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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CSS

About CSS Preprocessors

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

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

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-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient. For instance, CoffeeScript can help prevent easy-to-make mistakes and offer a cleaner syntax and Babel can bring ECMAScript 6 features to browsers that only support ECMAScript 5.

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Babel is required to process package imports. If you need a different preprocessor remove all packages first.

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About External Resources

You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.

If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

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HTML 

            
              <div class="page-container">
  <div class="video-container">
    <video autoplay muted loop width="100%" height="100%" volume="0" canplay="false" role="img" aria-label="toy robot canon with motorized rotor">
      <source src="http://techslides.com/demos/sample-videos/small.webm" type="video/webm">
      <source src="http://techslides.com/demos/sample-videos/small.ogv" type="video/ogg">
      <source src="http://techslides.com/demos/sample-videos/small.mp4" type="video/mp4">
      <source src="http://techslides.com/demos/sample-videos/small.3gp" type="video/3gp">
      <img src=" http://placehold.it/350x150" alt="test alt img" />
    </video>
    <button type="button" class="video-btn">
      <span class="visuallyhidden">play or pause the video-image background. Video has no sound or narration</span>
      <i aria-hidden="true" class="fa fa-pause"></i>
    </button>
  </div>
  <div class="page-content">
    <h1>Super Cool Motor Robots!</h1>
    <p>Welcome to my site</p>
    <ul>
      <li>video element's img alt not read since it's a fallback only if video isn't supported </li>
      <li>instead, aria-label + role="img" added</li>
      <li>tested in VO & NVDA</li>
    </ul>
    <p>CAVEAT - this is a way to make a somewhat awkward pattern a little less awkward. Depending on the video, text might be a little hard to read. Also, site owners are the best judges of whether or not the video actually needs "alt" text, or if it's just decoration. In that case, aria-hidden may be the better approach.
    </p>
    <p>Having a video autoplay and loop may not be suitable for all audiences either, especially if the video has a lot going on visually and can be distracting.</p>
    <p>For more background, read Emma Sax's<a href="http://www.punkchip.com/accessible-html-video-as-a-background"> article about accessible background videos</a></p>
  </div>

 </div>
!

CSS 

            
              /* font awesome added for icon, this can be done in any way */
/* maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css */

/*page container*/
.page-container {
  position: relative;
  min-height: 800px;
}

/*video background*/
video {
  position: absolute;
  top: 0px;
  left: 0px;
  right: 0;
  bottom: 0;
  min-width: 100%;
  min-height: 100%;
  z-index: -1000;
  overflow: hidden;
}

/*video overlay to make text a litle less crappy*/
.video-container:after {
  display: block;
  z-index: 100;
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: rgba(0,0,0,0.5);
}

/* play/pause button styles */
.visuallyhidden {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}

.video-btn {
  border: none;
  background: none;
  color: #fff;
  position: absolute;
  display: block;
  font-size: 60px;
  z-index: 101;
  opacity: 0.5;
  bottom: 10%;
  right: 10%;
}

.video-btn:hover,
.video-btn:focus {
  opacity: 1;
}

.is-paused .video-btn i:before {
  content: "\f04b";
}

/*page styles*/
body {
  font-family: "Helvetica", Arial, sans-serif;
  background: #000;
  color: #fff;
}

.page-content {
  margin: 0 auto;
  padding: 40px;
  position: relative;
  z-index: 100;
  max-width: 1410px;
}

h1 {
  color: #fff;
  margin: 100px 0 15px;
  font-weight: bold;
  display: inline-block;  
  font-size: 30px;
}

ul {
  margin-bottom: 20px;
}

ul, li {
  list-style: disc;
  list-style-position: inside;
}

p {
  max-width: 600px;
  line-height: 1.4;
  color: #ddd;
}

a {
  color: inherit;
}
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JS 

            
              var $videoTrigger = $(".video-btn");
var $videoContainer = $(".video-container");

$videoTrigger.on("click", function(evt) {  
  if ($videoContainer.hasClass("is-paused")) {
    $videoContainer
      .removeClass("is-paused")
    	.find("video").get(0).play();
  }
  else {
  	$videoContainer
      .addClass("is-paused")
    	.find("video").get(0).pause();
  }
});

/*  
    $('#play-pause-button').click(function () {
   if ($("#media-video").get(0).paused) {
       $("#media-video").get(0).play();
   } else {
       $("#media-video").get(0).pause();
  }
});
    
  }*/
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