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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>

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Insecure Resource

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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-.

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

All packages are different, so refer to their docs for how they work.

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HTML 

              
                <!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" type="text/css" href="css/styles.css">
  <title>Parallax</title>
</head>
<body>

  <header>
    <h1>Life Is Beautiful :)</h1>
  </header>
  
  <section class="paragraph">
    Lorem ipsum dolor sit amet consectetur adipisicing elit. Quas omnis accusamus unde deserunt. Sapiente laboriosam sequi cupiditate sint debitis veritatis exercitationem dignissimos est enim molestias accusamus, suscipit nostrum asperiores minus!
    Eligendi ab fugiat dignissimos ipsam minima necessitatibus provident repellendus neque odit numquam aliquam expedita suscipit doloribus nesciunt facilis, molestiae quibusdam! Odit excepturi ab iure, aspernatur nemo aut repudiandae? Doloribus, earum?
    Eius blanditiis maxime impedit harum quasi pariatur atque beatae omnis expedita dolorum, vero explicabo numquam mollitia libero ut ratione, sit, amet assumenda voluptatem deserunt magnam rem facilis. Dolor, porro non?
    Tempore atque fugit quaerat neque esse? Unde doloremque odit distinctio mollitia quae quasi itaque atque dolor voluptatibus eligendi nemo labore repudiandae, sit maiores at eius. Nulla ipsa voluptatibus laboriosam culpa!
    Iusto ipsum aliquam obcaecati a ullam fuga dolorem dolores, eius, beatae corporis repudiandae quibusdam ab natus? Voluptates unde quaerat quas, placeat, blanditiis hic totam harum tempore assumenda ullam voluptatibus quod.
  </section>

</body>
</html>
!

CSS 

              
                * {
  padding: 0;
  margin: 0;
}

/* this style for "html" is must, otherwise nothing will work */

html {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  width: 100%;
  height: 100%;
  perspective: 1px;
  transform-style: preserve-3d;
  overflow-x: hidden;
  overflow-y: scroll;
  font-family: sans-serif;
  color: #fff;
}

header {
  width: 100vw;
  min-height: 100vh;
  position: relative;
  transform-style: preserve-3d;
}

header h1 {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* placing the actual background image using pseudo selector */
header::before {
  content: "";
  min-height: 100vh;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background-image: url(https://www.pexels.com/photo/326055/download/?search_query=fantasy&tracking_id=4y5tsdeixje);
  background-size: cover;
  transform: translateZ(-1px) scale(2);
  z-index: -1;
}

.paragraph {
  position: absolute;
  top: 100vh;
  background-color: #111;
  line-height: 2;
  padding: 70px;
  font-size: 1.2rem;
}
!

JS
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999px

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