Menu won't center at all on one particular site?

I've built a number of sites all using Atahualpa (thanks, it's wonderful!). The menu will center when I use %page-center except one. I can't see anything I've done differently but I can't get this one to center. On all the others, I had the problem of the dotted lines showing when I centered it (I found fix for that on another thread), but this one just stays all to the left or all to the right. The site is http://easycarelandscaping.com
Thanks!