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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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.

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Add Packages

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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.


  Bacon ipsum dolor sit amet corned beef swine drumstick tri-tip, pancetta pork meatloaf beef ribs strip steak tongue kielbasa tenderloin venison. Ground round kielbasa filet mignon, frankfurter strip steak bacon jerky pig ball tip tri-tip tongue spare ribs t-bone rump tail. Ribeye andouille ball tip flank kevin. 
<div class="btn-group">
  <a class="btn" href="#">Primary Action</a>
  <a class="btn" href="#">Secondary Action</a>


                .btn {
  font-size: 1.2em;
  background: dodgerblue;
  color: white;
  padding: 10px 20px;
  border-radius: 6px;
  &+& {
    margin-left: 15px;
    background: firebrick;