Pen Settings

HTML

CSS

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

JavaScript

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.

+ add another resource

Behavior

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.

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

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                %h1 Hello
%h2 Hello
%h3 Hello
%h4 Hello
%h5 Hello
              
            
!

CSS

              
                @import url('https://fonts.googleapis.com/css?family=Source+Sans+Pro')

html
  font-family: 'Source Sans Pro', 'Helvetica Neue', sans-serif
  font-feature-settings: 'kern', 'liga'
  font-kerning: normal
  line-height: 0.75
  padding: 10px 20px 0
  
h1, h2, h3, h4, h5, h6
  font-weight: normal
  margin: 0 0 10px

h1
  font-size: 300px
  margin-left: -0.08em

h2
  font-size: 200px
  margin-left: -0.075em

h3
  font-size: 100px
  margin-left: -0.06em

h4
  font-size: 50px
  margin-left: -0.04em

h5
  font-size: 25px
              
            
!

JS

              
                
              
            
!
999px

Console