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 is required to process package imports. If you need a different preprocessor remove all packages first.

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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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.


  text = '
    So here we are again — back with more placeholder text for another example.
    You’re sticking around to read it, too.
    We’re paused for a moment here, reading and learning together.
    Relaxing, isn’t&nbsp;it?
  text2 = '
    Now we’re on the second paragraph.
    Feel free to stop reading and look at the indentation.
    That’s why we’re both here after&nbsp;all.

    %p= text
    %p.ti05= text2

    %p= text
    %p.ti1= text2

    %p= text
    %p.ti2= text2

    %p= text
    %p.ti3= text2


                @import url('')

  background: #f7f7f6
  font-family: 'Source Serif Pro', serif
  font-size: 17px
  line-height: 1.35
  padding: 37.5px

  margin-left: auto
  margin-right: auto

  max-width: 460 / 19 * 1em
  max-width: 620 / 19 * 1em
  max-width: 750 / 19 * 1em
  max-width: 900 / 19 * 1em

  margin: 0

  + p

      text-indent: 0.5em
      text-indent: 1em
      text-indent: 2em
      text-indent: 3em

  margin-bottom: 17px * 1.35