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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-.

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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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You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

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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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Use npm Packages

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HTML

            
              <!doctype html>
<html ⚡>

<head>
  <meta charset="utf-8">
  <link rel="canonical" href="https://www.ampstart.com/templates/article.amp">
  <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
  <style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
  <script async="" src="https://cdn.ampproject.org/v0.js"></script>
  <script custom-element="amp-animation" src="https://cdn.ampproject.org/v0/amp-animation-0.1.js" async></script>
  <script custom-element="amp-position-observer" src="https://cdn.ampproject.org/v0/amp-position-observer-0.1.js" async></script>
    <script custom-element="amp-carousel" src="https://cdn.ampproject.org/v0/amp-carousel-0.1.js" async></script>
  <script custom-element="amp-fit-text" src="https://cdn.ampproject.org/v0/amp-fit-text-0.1.js" async></script>

  <style amp-custom>
    main {
      font-family: Helvetica, sans-serif;
      padding: 10px;
      max-width: 412px;
      margin: auto;
    }

    .spacer {
      height: 100vh;
      width: 100%;
      background-image: -webkit-linear-gradient(#EEE 50%, white 50%);
      background-image: linear-gradient(#EEE 50%, white 50%);
      background-size: 100% 3em;
    }

    .carousel-container {
      margin-right: -60%;
      margin-left: 60%;
      
    }
    
    .carousel-parent {
      overflow: hidden;
    }
  </style>
</head>

<body>

  <main>
    <div class="spacer"></div>
    <div class="carousel-parent">
    <amp-carousel class="carousel-container"  height="300" layout="fixed-height" type="carousel">

      <amp-position-observer on="enter:carouselTrasnsition.start" intersection-ratios="0.8" layout="nodisplay">
      </amp-position-observer>

      <amp-img src="https://unsplash.it/800/600?image=1003" width="400" height="300" alt="a sample image"></amp-img>
      <amp-img src="https://unsplash.it/800/600?image=1043" width="400" height="300" alt="another sample image"></amp-img>
      <amp-img src="https://unsplash.it/800/600?image=1032" width="400" height="300" alt="and another sample image"></amp-img>
    </amp-carousel>
    </div>
<amp-animation id="carouselTrasnsition"
  layout="nodisplay">
  <script type="application/json">
    {
      "duration": "500ms",
      "fill": "both",
      "easing": "ease-in",
      "delay": "200ms",
      "animations": [{
        "selector": ".carousel-container",
        "keyframes": [{
          "transform": "translateX(-60%)"
        }]
      }]
    }
  </script>
</amp-animation>
    
    <div class="spacer"></div>
    <div class="spacer"></div>
  </main>
</body>

</html>
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JS
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