Design tweaks

Played around with the design a bit to get the sidebar a consistent width — and ended up shifting it to the left.
Had a deuce of a time doing it, too, mostly because of CSS rendering differences between Firefox and IE (and praise be for the Firefox IEView extension). Finally ended up swiping div styles from the 20×20 Room, which worked.
(Amazing how many sites use the dual-fixed-width-floating-columns code, by the by.)
I want to do some tweaking of colors here, too, eventually. The powder-blue/powder-grey bit is putting me to sleep.