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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

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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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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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HTML 

              
                <main>

  <h1>Awesome Company</h1>

  <p>
    This demonstrates three different ways to link a block of content in a way that creates the largest hit area. This is a test to gather feedback. The layout represents a common one on the web.
  </p>

  <div>

    <article class="block">
      <a href="https://www.wikipedia.org/">
        <img src="data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 85'%3E%3Cpath d='M38 0H12A12 12 0 0 0 0 12v61a12 12 0 0 0 12 12h26a12 12 0 0 0 12-12V12A12 12 0 0 0 38 0zM12 4h26a8 8 0 0 1 8 8v50H4V12a8 8 0 0 1 8-8zm26 77H12a8 8 0 0 1-8-8v-7h42v7a8 8 0 0 1-8 8z' fill='%23000'/%3E%3Cpath d='M30 72H20a2 2 0 0 0 0 4h10a2 2 0 0 0 0-4z' fill='%23000'/%3E%3C/svg%3E" alt="">
        <h2>The First Example</h2>
        <p>
          This is done by wrapping the header and text both in the same link. No CSS is used to make them block.
        </p>
      </a>
    </article>

    <article class="individual">
      <a href="https://duckduckgo.com/"><img src="data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 90 84.62'%3E%3Cpath d='M27.28 53.71l18.12 15zm18.1 11.49L29 51.61l16.34 13.62zM90 29.69v54.93H0V29.68l9.62-6.31V8.32h23L45.28 0l12.53 8.32h22.56v15zm-9.63 5.94l6-5.08-6-4v9.06zM37.57 8.32h15.31l-7.61-5.05zM12.35 37.71L29 51.61l16.34 13.62 32.31-27.51V11h-65.3v26.71zm-8.7-7.16l6 5v-8.91zm83.62 2.81L45.43 68.79l-18.12-15L2.73 33.32v48.57h84.54V33.36zM44.8 50.74c-7.07 0-13.06-5.17-13.06-13.45 0-8.88 6.16-16.55 15.73-16.55C55 20.75 60 26 60 33.2c0 6.47-3.62 10.26-7.67 10.26-1.72 0-3.32-1.16-3.19-3.79H49c-1.51 2.54-3.49 3.79-6.08 3.79s-4.65-2-4.65-5.43a10.18 10.18 0 0 1 10.19-10.22 11.36 11.36 0 0 1 4.61.9l-1.46 7.8c-.65 3.28-.13 4.78 1.29 4.83 2.2 0 4.65-2.89 4.65-7.89 0-6.25-3.75-10.73-10.43-10.73-7 0-12.93 5.56-12.93 14.31 0 7.2 4.7 11.64 11.08 11.64a13.44 13.44 0 0 0 6.51-1.51l.69 1.84a15.71 15.71 0 0 1-7.67 1.74zm5.3-20.34a7.49 7.49 0 0 0-2.15-.3c-3.79 0-6.85 3.58-6.85 7.76 0 1.9.95 3.28 2.85 3.28 2.5 0 4.78-3.19 5.26-5.86z' fill='%23000'/%3E%3C/svg%3E" alt="Example two."></a>
      <h2><a href="https://duckduckgo.com/">The Second Example</a></h2>
      <p>
        <a href="https://duckduckgo.com/">This wraps the header and text each in their own link, but to the same resource.</a>
      </p>
    </article>

    <article class="after">
      <img src="data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 86 75.97'%3E%3Cpath d='M78 0a8 8 0 0 1 8 8v40a8 8 0 0 1-8 8h-9l1.81 17.78a2 2 0 0 1-3.37 1.63L48 56h-7v3.06A6 6 0 0 1 35 65H20L9.41 75.41A2 2 0 0 1 6 73.62L7.56 65H6a6 6 0 0 1-6-5.94V39.94A6 6 0 0 1 6 34h6V8a8 8 0 0 1 8-8h58zm0 4H20a4 4 0 0 0-4 4v40a4 4 0 0 0 4 4h28.81a2 2 0 0 1 1.41.56l16.09 16-1.5-14.41a2.09 2.09 0 0 1 2-2.19H78a4 4 0 0 0 4-4V8a4 4 0 0 0-4-4zm-7 9a2 2 0 0 1 0 4H27a2 2 0 0 1 0-4h44zm0 13a2 2 0 0 1 0 4H27a2 2 0 0 1 0-4h44zM12 38H6a1.91 1.91 0 0 0-2 1.94v19.12A1.91 1.91 0 0 0 6 61h4a2.09 2.09 0 0 1 2 2.34l-.84 4.84 6.72-6.62a2 2 0 0 1 1.31-.56H35a1.91 1.91 0 0 0 2-1.94V56H20a8 8 0 0 1-8-8V38zm59 1a2 2 0 0 1 0 4H27a2 2 0 0 1 0-4h44z' fill='%23000'/%3E%3C/svg%3E"
        alt="">
      <h2><a href="https://www.nasa.gov/">The Third Example</a></h2>
      <p>
        Only the header is the link here, but CSS is used to expand the hit area around the content.
      </p>
    </article>

  </div>
  
  <p>
    This example is for a Twitter poll (for now). You may <a href="https://twitter.com/aardrian/status/953456269960122368">participate at the original tweet</a> by choosing one and/or replying to the tweet.
  </p>

</main>
!

CSS 

              
                @import url(https://fonts.googleapis.com/css?family=Lato:400,700);

body {
  background-color: #6d695c;
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAMAAAAoLQ9TAAAACVBMVEUAAAAAAAAAAACDY+nAAAAAA3RSTlMmDQBzGIDBAAAAG0lEQVR42uXIIQEAAADCMHj/0NdkQMws0HEeAqvwAUGJthrXAAAAAElFTkSuQmCC);
  font-size: 100%;
  color: #333;
  font-family: Lato, Arial, sans-serif;
  padding: 0;
  margin: 0;
}

main {
  display: block;
  box-sizing: border-box;
  width: 90%;
  margin: 1em auto;
  padding: 1em 2em;
  color: #000;
  background-color: rgba(204, 204, 204, 0.8);
  border: 0.07em solid rgba(0, 0, 0, 0.5);
  border-radius: 0.5em;
  max-width: 60em;
}

h2 {
  text-align: center;
}

img {
  height: 4em;
  width: auto;
  display: block;
  margin: 0 auto;
  transition: all .1s ease-in-out;
}

article a,
article a:link,
article a:visited,
article a:hover,
article a:focus,
article a:active {
  text-decoration: none;
  color: #000;
}

main > div {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -1em;
}

article {
  flex: 1 0 10em;
  margin: 0.5em 1em;
}

article h2 a:hover,
article h2 a:focus,
article a:hover h2,
article a:focus h2 {
  text-decoration: underline;
  text-decoration-skip: ink;
  text-decoration-skip-ink: auto;
  color: #00d;
}

article p a:hover,
article p a:focus,
article a:hover p,
article a:focus p,
article.after:hover,
article.after:focus-within {
  color: #00d;
}

article a:hover img,
article a:focus img,
article.after:hover img,
article.after:focus-within img {
  transform: scale(1.2);
}

article.after {
  position: relative;
}

article.after a[href]::after {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}
!

JS
!
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