Remove left margin on: #primary-content ul
BTW, IMO, the use of accordion for Services and Samples is not a good choice for UX in your case. Why are you forcing user to click over dozen of times to view what company has to offer? Wouldn’t this be much nicer to present that info in a nice grid? There’s a place for accordion under some circumstances where it is appropriate based on the info under category which is relevant to either user location, specific needs, etc. In your case I see it as a annoyance. There’s lot of hipster things we can do now days but, just because we can, doesn’t mean we always should.