User blog comment:BertH/Darwin - The Next Evolution of Wikia/@comment-1474707-20130822231952/@comment-2118812-20130823005152

Acer, article content is no longer fixed to 670px. Depnding on your screen resolution, and how you resize your browser, the width the of the body content will grow or shrink between a minimum of  ~700px content space, or max ~1300px content space.

If you shrink your browser really small, or are on a tablet in portrait mode, the right rail modules move to the bottom of the page. Fluid Layout is enabled here in Community Central, or you can experiment with Fluid Layout example pages on darwin.wikia.com. More exact details are on this thread, if you're interested: http://community.wikia.com/wiki/Thread:562302  If you've got suggestions or comments, let us know!