Prefer Stylus?

• Unlimited nesting with consistently sized gutters.
• Nesting without parent contexts. For instance in Jeet you have to write column(1/3 1/2) where 1/2 is the size of the containing element. All ratio grid systems aside from Elf suffer from this in some form or fashion.
• Ratio based sizing (e.g. column(1/3).
• Gutters can be any unit (e.g. 30px, 2rem, etc.). These are static so you can space elements vertically as well for a perfect grid.
• Tiny file size compared to other ratio grid systems.
• Flexbox makes short work of aligning elements vertically and horizontally.

• Forkable
• Importable
• Collection of Examples

• Copy and paste _elf.scss to your project
• @import 'path/to/elf';

View _elf.scss for mixin and parameter descriptions.

• debug($color: 'blue')
• column($ratio: 1, $gutter: $elf-gutter)
• cycle($item: 0, $uncycle: 0, $gutter: $elf-gutter)
• offset($ratio: 0, $column: true, $gutter: $elf-gutter)
• span($ratio: 1)
• shift($ratio: 1, $column: true, $gutter: $elf-gutter)
• unshift()
• align-children($direction: 'both')

• General http://caniuse.com/#search=calc
• align-children() http://caniuse.com/#search=flexbox