Requests for comment/Grid system

This document proposes to include a Grid system in MediaWiki.

What is a grid system and why is it needed?
A grid defines a set of guides that help in the layout of visual elements.

What kind of grid system?
Optional, Nestable, Proportional, Responsive and Semantic

Proportional
Based on percentages, not on a fixed number of columns.

Responsive
Responsive based on abstract sizes.

Semantic
Grid systems are usually supported by adding classes to HTML elements. Adding layout-related information to the markup can be considered a problem. Using a CSS preprocessor as proposed in LESS RFC will allow to use semantic rich classes instead.