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Pen Settings

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

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

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

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

Code Indentation


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.

              Lorem ipsum dolor sit amet, <a href="#">consectetur</a> adipiscing elit. In dignissim auctor tempus. Sed hendrerit imperdiet est, a consectetur eros laoreet in. Quisque sed magna pulvinar leo posuere placerat ut et nulla. Lorem ipsum dolor sit amet, consectetur adipiscing elit. <a href="#">Maecenas rhoncus congue</a> hendrerit. Aenean varius vestibulum enim, sit amet fermentum ligula volutpat sed. Phasellus eleifend ante non metus vehicula sit amet aliquet neque vehicula. <a href="#">Mauris porta</a>, augue a accumsan pharetra, enim ante vehicula diam, vitae ullamcorper quam diam eu elit. 
  color: #03c;
  transition: 0.5s;
a:hover {
  color: #3cf;
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