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Pen Settings

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

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Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

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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.

  <img src="http://placehold.it/305x355" srcset="http://placehold.it/241x280 241w, http://placehold.it/305x355 305w, http://placehold.it/320x372 320w, http://placehold.it/374x435 374w, http://placehold.it/472x549 472w, http://placehold.it/482x560 482w, http://placehold.it/568x660 578w, http://placehold.it/610x709 610w, http://placehold.it/666x774 666w" sizes="(min-width: 1280px) 305px, (min-width: 1024px) calc((100vw - 60px) / 4), (min-width: 768px) calc((100vw - 60px) / 3), 50vw" alt="A product image">
              main {
  width: 100%;
  max-width: 1280px;
  margin: auto;
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