I have an Omega 3.0 page with a sidebar. In the main content area, I would like my listings of nodes to be displayed in 4 columns if the wide.css is used, 3 columns if normal.css is used, and 2 columns wide if I am in the narrow mode. What general approach would I take to doing this?
... is this just done just with css?
I want something like is found at http://colly.com/comments/carry_on_responsively/
... or, http://www.alistapart.com/articles/responsive-web-design/