Pen Settings



CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URLs added here will be added as <link>s in order, and before the CSS in the editor. You can use the CSS from another Pen by using its URL and the proper URL extension.

+ add another resource


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


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.


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.


                <h2>Dividers (horizontal rule) <code>&lt;hr&gt;</code></h2>

<p>Use dividers to define thematic breaks between paragraphs. To denote the end of one section of a page and the start of another, it's better to use the <code>&lt;section&gt;</code> tag. <code>&lt;hr&gt;</code>'s have top and bottom margin to provide spacing between sections of content.</p>

<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Atque iste laboriosam labore. Corrupti, quasi. Quas labore placeat quidem ab aut dolorem ducimus aperiam, laborum atque animi! Officia distinctio rem magnam.</p>

<hr />

<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maxime quam, numquam voluptatum. Sint error enim vero consequuntur itaque veniam. Mollitia odit eaque nisi ipsa illum iusto magni, fuga nihil nam.</p>

<hr />

<h1>New Section</h1>

<hr />


                body {
  margin: 2rem;