Revert "further damage the theme in a search for real estate"

This didn't work--the content div line-wraps below the sidebar when its
natural width is wider than the available space.

This reverts commit 300f51331d5b190db0e51ed0636c327b268a869b.

Change-Id: Ief062753b4a4e274a7d18a01b9d1199a251c4826