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Pen Settings

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

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Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

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Code Indentation


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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.

              @keyframes rotate
    transform: rotate(-135deg)
    transform: rotate(45deg)

  width: 100px
  height: 100px
  position: absolute
  clip: rect(0, 100px, 100px, 50px)

  &, &:before, &:after
    box-sizing: border-box

    content: ''
    position: absolute
    width: 100%
    height: 100%
    border-width: 3px
    border-style: solid
    border-color: black black transparent transparent
    border-radius: 50%
    animation: rotate 1s infinite linear
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