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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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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-.

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.

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Babel includes JSX processing.

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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.

You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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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 Skypack, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ES6 import usage.

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

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HTML 

              
                <article>
  <h1>Main Title</h1>
  <p class="subtitle fancy"><span>A fancy subtitle</span></p>
  <div class="copy">
    <p>Bacon ipsum dolor sit amet pancetta meatloaf eiusmod laborum commodo officia ex exercitation bacon. Sunt magna duis ex prosciutto nostrud. Tri-tip ball tip sausage spare ribs sirloin sunt officia anim magna eiusmod turducken sint velit meatball ham hock. Exercitation culpa pork chop rump, short loin meatball ut aute tenderloin.</p>

    <p>Cillum pariatur ground round filet mignon capicola ad ham id doner sirloin beef ribs qui mollit pork chop. Laboris bacon officia tenderloin tempor, tongue excepteur tail occaecat meatloaf consectetur ham hock consequat ut. Frankfurter jerky enim irure salami aliqua. In pork loin meatball, ut ad in nisi turkey turducken mollit.</p>

    <p>Filet mignon capicola aute short loin pork belly qui ball tip spare ribs do short ribs sint. Commodo dolore rump nostrud ball tip. Veniam in hamburger tail, sunt culpa beef ribs ham hock irure. Ut bresaola flank consectetur pastrami sirloin short ribs meatball pork officia sausage in doner pork loin sed. Pastrami duis non pork loin magna, pig quis bresaola. Esse t-bone laborum, ex turkey proident flank aliquip occaecat qui sint non eiusmod strip steak spare ribs. Anim kielbasa pork chop id ut dolore commodo prosciutto doner magna.</p>
  </div>
</article>

<article>
  <h1>
    <span class="embiggen">Love</span>
    <div class="fancy amp"><span>&</span></div>
    Marriage
  </h1>
  <div class="copy">
    <p>Go together like a horse and carridge. Cillum pariatur ground round filet mignon capicola ad ham id doner sirloin beef ribs qui mollit pork chop. Laboris bacon officia tenderloin tempor, tongue excepteur tail occaecat meatloaf consectetur ham hock consequat ut. Frankfurter jerky enim irure salami aliqua. In pork loin meatball, ut ad in nisi turkey turducken mollit.</p>

    <p>Filet mignon capicola aute short loin pork belly qui ball tip spare ribs do short ribs sint. Commodo dolore rump nostrud ball tip. Veniam in hamburger tail, sunt culpa beef ribs ham hock irure. Ut bresaola flank consectetur pastrami sirloin short ribs meatball pork officia sausage in doner pork loin sed. Pastrami duis non pork loin magna, pig quis bresaola. Esse t-bone laborum, ex turkey proident flank aliquip occaecat qui sint non eiusmod strip steak spare ribs. Anim kielbasa pork chop id ut dolore commodo prosciutto doner magna.</p>
  </div>
  
</article>
!

CSS 

              
                @import url(https://fonts.googleapis.com/css?family=Cinzel+Decorative:400,900);

body {
  font-family: 'Cinzel Decorative', cursive;
  background: url(https://s.cdpn.io/3/blurry-blue.jpg);
  background-size: cover;
  color: white;
}

h1 {
  font-size: 3em;
  text-align: center;
}
.embiggen {
  font-size: 4em;
  text-shadow: 0 0 40px #ffbab3;
}
article {
  max-width: 600px;
  overflow: hidden;
  margin: 0 auto 50px;
}

.subtitle {
  margin: 0 0 2em 0;
}
.fancy {
  line-height: 0.5;
  text-align: center;
}
.fancy span {
  display: inline-block;
  position: relative;  
}
.fancy span:before,
.fancy span:after {
  content: "";
  position: absolute;
  height: 5px;
  border-bottom: 1px solid white;
  border-top: 1px solid white;
  top: 0;
  width: 600px;
}
.fancy span:before {
  right: 100%;
  margin-right: 15px;
}
.fancy span:after {
  left: 100%;
  margin-left: 15px;
}
.amp {
  margin: 0 0 0.25em 0;
}
.amp span {
  font-size: 0.7em;
}

.copy {
  font: 1em Georgia, Serif;
  text-align: justify;
  -moz-column-count: 2;
  -moz-column-gap: 20px;
  -webkit-column-count: 2;
  -webkit-column-gap: 20px;
}
.copy p {
  margin: 0 0 1em 0;
}
!

JS 

              
                jQuery("h1").fitText(1.2);
!
999px

Console