Any URL's added here will be added as
If active, Pens will autosave every 30 seconds after being saved once.
If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.
If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.
Visit your global Editor Settings.
#`font-size` mixin Takes a font size with units and generates a `font-size` CSS declaration If the unit is `rem` will also output a `px` value as fallback for older browsers. If the unit is `px`, will also output a `rem` value as an enhancement for newer browsers.
body width: 30em text-align: justify @mixin font-size($size) @if unit($size) == rem font-size: $size*$base-font-size/1rem font-size: $size @if unit($size) == px font-size: $size/$base-font-size*1rem
Also see: Tab Triggers