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

              
                ul.threeD
   li
      a(href="#") 
         span.down one
         span.up one
         
   li
      a(href="#") 
         span.down two   
         span.up two
   li
      a(href="#")  
         span.down three
         span.up three
         
   li
      a(href="#") 
         span.down four 
         span.up four
          
              
            
!

CSS

              
                @import url(https://fonts.googleapis.com/css?family=Alfa+Slab+One)

@keyframes zIndex
   form
      z-index: 1
   to
      z-index: 0

$height: 50px
$downColor: #779
$upColor: #e87
$time: 250ms


body
   font-family: 'Alfa Slab One', sans-serif
   
ul.threeD
   background: #779
   display: table
   width: 100%
   margin-top: 10px
   li
      display: block
      float: left
      perspective: 200px
      position: relative
      z-index: 0
      animation: zIndex $time ease-in-out
      &:hover 
         z-index: 1
      a
         display: block
         text-decoration: none
         display: block
         text-align: center
         height: $height

         transform-style: preserve-3d
         transition: transform $time ease-in-out
         transform: translateZ( round($height / -2 )) 
         
         .up, .down
            display: block
            height: $height
            line-height: $height
            padding: 0 20px
            
         .up
            color: lighten($upColor, 30%)
            background: darken($upColor, 20%)
            transform: rotateX(90deg) translateZ( round($height * 1.5 ) )
            transition: background $time ease-in-out
         .down
            color: lighten($downColor, 30%)
            background: $downColor
            transform: translateZ( round($height / 2 ) )
            transition: background $time ease-in-out
            
         &:hover 
            transform: translateZ( round($height / -2 ) ) rotateX(-90deg) 

            .up
               background: $upColor
            .down
               background: darken($downColor, 20%)
            
            
              
            
!

JS

              
                
              
            
!
999px

Console