Update (2014-01-27): Now that the logo is gone, the bug still remains. It's as if there should be a scrollbar, but there's none, so it shows white background instead. (On a tablet, so no scrollbar should even be applied to the body)
The cc-wiki logo on my tablet (Nexus 7 2013, Android 4.4, Chrome) is shifted outside the body element breaking the 100% width for the whole page. It's not a big problem, but it's annoying seeing an empty white bar on the right edge of the screen.
It happens at least on MSO and SO, but not on Arqade. The page is fully zoomed out, and display resolution is 1920x1200, so it shouldn't be a too small issue.
Here you can see both topbar and footer not fully extending: