Pen Settings

HTML

About HTML Preprocessors

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.

Learn more · Versions

Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

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.

!
Insecure Resource

The resource you are linking to is using the 'http' protocol, which may not work when the browser is using https.

CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

Learn more · Versions

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).

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

Powered by Algolia
About External Resources

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

If the stylesheet 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 CSS 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.

Learn more

+ add another resource

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.

Learn more · Versions

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

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

Powered by Algolia
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.

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.

Learn more

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

Next Step Leave tour

HTML 

              
                <!-- 
  
  Radio version of tabs.

  Requirements:
  - not rely on specific IDs for CSS (the CSS shouldn't need to know specific IDs)
  - flexible for any number of unkown tabs [2-6]
  - accessible

  Caveats:
  - since these are checkboxes the tabs not tab-able, need to use arrow keys

  Also worth reading:
  http://simplyaccessible.com/article/danger-aria-tabs/
-->

<div class="tabset">
  <!-- Tab 1 -->
  <input type="radio" name="tabset" id="tab1" aria-controls="marzen" checked>
  <label for="tab1">Märzen</label>
  <!-- Tab 2 -->
  <input type="radio" name="tabset" id="tab2" aria-controls="rauchbier">
  <label for="tab2">Rauchbier</label>
  <!-- Tab 3 -->
  <input type="radio" name="tabset" id="tab3" aria-controls="dunkles">
  <label for="tab3">Dunkles Bock</label>
  
  <div class="tab-panels">
    <section id="marzen" class="tab-panel">
      <h2>6A. Märzen</h2>
      <p><strong>Overall Impression:</strong> An elegant, malty German amber lager with a clean, rich, toasty and bready malt flavor, restrained bitterness, and a dry finish that encourages another drink. The overall malt impression is soft, elegant, and complex, with a rich aftertaste that is never cloying or heavy.</p>
      <p><strong>History:</strong> As the name suggests, brewed as a stronger “March beer” in March and lagered in cold caves over the summer. Modern versions trace back to the lager developed by Spaten in 1841, contemporaneous to the development of Vienna lager. However, the Märzen name is much older than 1841; the early ones were dark brown, and in Austria the name implied a strength band (14 °P) rather than a style. The German amber lager version (in the Viennese style of the time) was first served at Oktoberfest in 1872, a tradition that lasted until 1990 when the golden Festbier was adopted as the standard festival beer.</p>
  </section>
    <section id="rauchbier" class="tab-panel">
      <h2>6B. Rauchbier</h2>
      <p><strong>Overall Impression:</strong>  An elegant, malty German amber lager with a balanced, complementary beechwood smoke character. Toasty-rich malt in aroma and flavor, restrained bitterness, low to high smoke flavor, clean fermentation profile, and an attenuated finish are characteristic.</p>
      <p><strong>History:</strong> A historical specialty of the city of Bamberg, in the Franconian region of Bavaria in Germany. Beechwood-smoked malt is used to make a Märzen-style amber lager. The smoke character of the malt varies by maltster; some breweries produce their own smoked malt (rauchmalz).</p>
    </section>
    <section id="dunkles" class="tab-panel">
      <h2>6C. Dunkles Bock</h2>
      <p><strong>Overall Impression:</strong> A dark, strong, malty German lager beer that emphasizes the malty-rich and somewhat toasty qualities of continental malts without being sweet in the finish.</p>
      <p><strong>History:</strong> Originated in the Northern German city of Einbeck, which was a brewing center and popular exporter in the days of the Hanseatic League (14th to 17th century). Recreated in Munich starting in the 17th century. The name “bock” is based on a corruption of the name “Einbeck” in the Bavarian dialect, and was thus only used after the beer came to Munich. “Bock” also means “Ram” in German, and is often used in logos and advertisements.</p>
    </section>
  </div>
  
</div>

<p><small>Source: <cite><a href="https://www.bjcp.org/stylecenter.php">BJCP Style Guidelines</a></cite></small></p>
!

CSS 

              
                /*
 CSS for the main interaction
*/
.tabset > input[type="radio"] {
  position: absolute;
  left: -200vw;
}

.tabset .tab-panel {
  display: none;
}

.tabset > input:first-child:checked ~ .tab-panels > .tab-panel:first-child,
.tabset > input:nth-child(3):checked ~ .tab-panels > .tab-panel:nth-child(2),
.tabset > input:nth-child(5):checked ~ .tab-panels > .tab-panel:nth-child(3),
.tabset > input:nth-child(7):checked ~ .tab-panels > .tab-panel:nth-child(4),
.tabset > input:nth-child(9):checked ~ .tab-panels > .tab-panel:nth-child(5),
.tabset > input:nth-child(11):checked ~ .tab-panels > .tab-panel:nth-child(6) {
  display: block;
}

/*
 Styling
*/
body {
  font: 16px/1.5em "Overpass", "Open Sans", Helvetica, sans-serif;
  color: #333;
  font-weight: 300;
}

.tabset > label {
  position: relative;
  display: inline-block;
  padding: 15px 15px 25px;
  border: 1px solid transparent;
  border-bottom: 0;
  cursor: pointer;
  font-weight: 600;
}

.tabset > label::after {
  content: "";
  position: absolute;
  left: 15px;
  bottom: 10px;
  width: 22px;
  height: 4px;
  background: #8d8d8d;
}

.tabset > label:hover,
.tabset > input:focus + label {
  color: #06c;
}

.tabset > label:hover::after,
.tabset > input:focus + label::after,
.tabset > input:checked + label::after {
  background: #06c;
}

.tabset > input:checked + label {
  border-color: #ccc;
  border-bottom: 1px solid #fff;
  margin-bottom: -1px;
}

.tab-panel {
  padding: 30px 0;
  border-top: 1px solid #ccc;
}

/*
 Demo purposes only
*/
*,
*:before,
*:after {
  box-sizing: border-box;
}

body {
  padding: 30px;
}

.tabset {
  max-width: 65em;
}
!

JS
!
999px

Console