everything shifted left!

I was changing a featured section on site of an ENGO I help out and must have made another change at the same time because now everything on every page is aligned as LEFT as it can go instead of showing in the middle of the browser window. I believe I was changing the width of a section from 380px to 900px.

Also bullets have appeared between the navigation headings and on the drop downs.

http://www.projectwatershed.ca

Please help!
Thanks