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

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Visit your global Editor Settings.

HTML

              
                <section>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam non maximus purus, sed pharetra elit. Donec egestas nisl sed gravida tempus. Aenean eget justo aliquet felis faucibus fermentum. Fusce nec pharetra eros, eu facilisis enim. Pellentesque egestas lobortis erat, vel molestie tellus porta eu. Maecenas euismod lacinia placerat. Quisque faucibus diam arcu, sed gravida ipsum imperdiet id. Nunc tincidunt, metus sed sagittis pellentesque, dui libero gravida elit, sed commodo dolor lacus in elit.</p>
</section>
              
            
!

CSS

              
                section {
 overflow: auto; /*Firefox*/
 overflow: overlay;
 height: 100px;
  width: 300px;
}

/*Webkit*/
section::-webkit-scrollbar {
  display: none;
  width: 10px;
  height: 10px;
  background-color: lightblue;
}
section:hover::-webkit-scrollbar {
  display: initial;  
}
section::-webkit-scrollbar-thumb {
  background-color: #09C;
}
              
            
!

JS

              
                
              
            
!
999px

Console