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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.

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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.

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Code Indentation


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Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ducimus dolor odit sint nesciunt deleniti dolorem commodi itaque quidem error! Sit officiis repudiandae quae voluptates natus aliquam reprehenderit explicabo dolorem obcaecati.</p>
              body {
  background: #ccc;
section {
  margin: 0 auto;
  width: 25rem;
  background: white;
  padding: 20px;
h2 {
  color: white;
  position: relative;
  background: black;
h2:before {
	content: "";
	position: absolute;
	top: 0;
	bottom: 0;
	left: -9999px;
	right: 0;
	border-left: 9999px solid black;
	box-shadow: 9999px 0 0 black;
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