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


Add Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import or require. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.


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.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              h1.has-lines Example Title

h1.has-lines Fusce dapibus, tellus ac cursus commodo, tortor mauris

p.has-lines or

p.has-lines Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus donec sed odio dui.

  button Action here

  p Uses flexbox to avoid the need for nested elements, or using overflow hidden to mask super-long absolutely-positioned lines.

  p This technique works in all decent browsers, including IE11+. IE10 requires some legacy flexbox syntax and some extra tweaks but also displays as expected.

  p IE9 and earlier show partial lines (at the pseudo-element’s min-width), but still looks passable. If content wraps to multiple lines, the after element drops too. Depending on design, I'd use a  #[code .flexbox] Modernizr class to either hide the lines or would revert to an older method where absolute positioning, super-wide fixed-width lines, and overflow hidden are used.
              $lines--content-gutter = 10px
$lines--min-width = 40px

  display flex
  align-items center
  text-align center
  // IE10
  justify-content center

    content ''
    flex-grow 1
    height 1px
    background #ccc
    min-width $lines--min-width
    // IE10
    display inline-block
    // IE9
    vertical-align middle

    margin-right $lines--content-gutter

    margin-left $lines--content-gutter

  padding 30px

  color #777
  max-width 500px
  margin 50px auto