Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

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.

+ add another resource

JavaScript

Babel includes JSX processing.

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.

+ add another resource

Packages

Add Packages

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.

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.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

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

Visit your global Editor Settings.

HTML

              
                <!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>
<body>
  <h1>Hello, there</h1>
  <p>Lorem, ipsum dolor sit amet consectetur adipisicing elit. Ad saepe omnis blanditiis deleniti aperiam exercitationem reprehenderit aut molestias laboriosam autem, aliquid explicabo quia ea, numquam harum ex magnam, repudiandae ullam.</p>
  <p>Dignissimos excepturi a repellendus sint quis! In possimus architecto illo. Non laudantium libero nesciunt recusandae, numquam perferendis ut incidunt nam distinctio magnam dolorum necessitatibus nostrum modi odit, ea aperiam fuga?</p>
  <p>Sunt enim rem excepturi? Soluta corrupti blanditiis repudiandae provident, libero voluptates odio dolores illum illo minima. Enim nihil, voluptatem vero repudiandae similique repellendus debitis quisquam cum! Distinctio aliquid quia perspiciatis?</p>
</body>
</html>
              
            
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CSS

              
                
              
            
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JS

              
                var paragraphs = document.getElementsByTagName('p');

console.log(paragraphs); // You will need to open your dev tools to see this.
              
            
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999px

Console