Spry menu won't quite line up

This is only a slight problem, but I don't understand why the menu isn't exactly lining up with the image below. The spry bar seems to end 1 pixel before the image below ends. I tried to make the width of the menu bar bigger, but that didn't seem have any effect. What could this be?

Here is the page:

http://sarahpellerdesign.com/shannon/index%20with%20new%20spry.html