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.

+ add another resource


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


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.


  h1 Double Helix
    - for (var x = 1; x < 15; x++)


// colors via
$primary: #FAF3DD
$secondary: #68B0AB
$accent: #8FC0A9

$height: 30px
$width: 100px
$animation-delay: 0.15
$animation: 2s
$size: 20px
  margin: 0
  box-sizing: border-box
  padding: 0
  padding-bottom: 0.714em !important
  padding-top: 0.714em !important
  text-transform: uppercase
  letter-spacing: 0.1em
  font-weight: 400
  color: $accent

  background: $primary
  font-family: 'Raleway', sans-serif
  text-align: center
  width: 150px
  height: 500px
  position: absolute
  left: 50%
  top: 50%
  transform: translate(-50%,-50%)
  font-size: 15px
  perspective: 2560px
  .helix > div
    width: $width
    height: $height
    margin: auto
    position: relative
    animation: revolve $animation reverse linear infinite
    transform-style: preserve-3d
    transform-origin: center center 0
    &:after, &:before
      content: ''
      height: $size 
      width: $size 
      border-radius: 100%
      background: red
      position: absolute
      animation: revolve $animation  linear infinite

      left: 0
      background: $secondary
      right: 0
      background: $accent
    @for $i from 1 through 15
        animation-delay: #{$i * $animation-delay}s
          animation-delay: #{$i * $animation-delay}s

@keyframes revolve
    transform: rotateY(360deg)
    transform: rotateY(0)



                // find me on