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. You can use the CSS from another Pen by using it's URL and the proper URL extention.

+ add another resource

JavaScript

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.

+ add another resource

Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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

              
                #content
  input type="text"
  .help 
    = "?"
    .message je suis un message d'aide
              
            
!

CSS

              
                @import compass

#content
  width: 500px
  margin: 100px auto
  
input, .help
  float: left
 
.help
  background: green
  height: 20px
  width: 20px
  margin-left: 5px
  text-align: center
  color: white
  font-weight: bold
  border-radius: 20px
  position: relative
  .message
    color: black
    position: absolute
    top: 0
    left: 30px
    display: none
    font-weight: normal
    width: 500px
    text-align: left

input:focus ~ .help
  background-color: darkblue
  .message
    display: block
              
            
!

JS

              
                
              
            
!
999px

Console