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

              
                // by twitter.com/dbox

body.debug
  section
    article      
      hgroup
        h1 debug()
        
      p  Toggle this on a parent element. It will add a border to its children, grandchildren, etc so you can see what's up - great for precise layout tweaks.  It will also add flags if you made mistakes like put in inline styles, forgot an alt on an image, left the alt blank, etc.
      ul
        li Level 4
          span Level 5
        li Level 4
          span(style="") Level 5 w/ Inline style flag
        li Level 4
      h3 Images
      ul
        li
          p no alt tag:
          img(src='http://dogr.io/doge.png' width="150px" height="150px")         
        li
          p empty alt tag:
          img(src='http://dogr.io/doge.png' width="150px" height="150px" alt="")        
        li
          p all good:
          img(src='http://dogr.io/doge.png' width="150px" height="150px" alt="Alt tags for images")  
     
      h3 Links
      ul
        li
          a empty a tag    
        li
          a(href="#") I link to #
        li
          a(href="http://www.dbox.us" title="Check out my site.") I'm cool           
              
            
!

CSS

              
                // Mixin: Debug
//
// Debugging tool - adds a border to the current element, its children, 
// grandchildren, etc so you can see what's up – great for precise layout  
// tweaks.  It will also add flags if you made mistakes like put in inline 
// styles, forgot an alt on an image, left the alt blank, etc. Not to be used 
// in production, obviously.

debug()
  border 1px solid MediumPurple
  > *
    border 1px solid DarkKhaki
  > * > *
    border 1px solid MediumTurquoise
  > * > * > *
    border 1px solid LightSlateGray
  > * > * > * > *
    border 1px solid LightBlue
  > * > * > * > * > *
    border 1px solid MediumSlateBlue
  > * > * > * > * > * > *
    border 1px solid DeepSkyBlue
  > * > * > * > * > * > * > *
    border 1px solid DarkSeaGreen

  img
    border: 1px solid #f00
    -webkit-filter: hue-rotate(330deg) contrast(.75) saturate(6)
    filter: hue-rotate(330deg) contrast(.75) saturate(6)

  img[alt]
    border: 1px solid LimeGreen
    -webkit-filter: none
    filter: none

  img[alt=""]
    border: 1px solid gold
    -webkit-filter: contrast(1) saturate(2)
    filter: contrast(1) saturate(2)

  a
    background: rgba(#f00, .1)
    border: 1px solid #f00

  a[title]
    background: none
    border-color: LimeGreen

  style
    border: block

  [style], style, [class=""], [id=""], a[href="#"]
    background: rgba(yellow, .2)
    border: 1px solid gold

// call it
.debug
  debug()










// Demo styles only - Disregard

body
  font-family Helvetica, Arial, sans
  font-size 16px
  line-height 1.4em
  padding 2% 8%
  margin 0
  
*
  box-sizing border-box

 h1
  font-size 4.4vw
  font-weight normal
  line-height 1em
  margin 0

article
  width 60%
  margin 0 20%
  padding 4%

ul
  list-style-type none
  padding 3%
  margin 0
  overflow hidden

  > li
    display inline-block
    float left
    width calc(100% / 3)
    padding 2%

    a
      float right

    &:last-child
      margin-right 0

code
  background LightSlateGray 
  color white




              
            
!

JS

              
                
              
            
!
999px

Console