Theme messed up, footer off center

hi there,
I have just recently installed wordpress and i have to say that it rocks!! But I have been having issues with a theme and i was wondering if anyone could shed some light on it?
The thing is that the bottom section of my blog (www.peterleary.net) is out of line, it just doesn’t seem to want to center itself if the blog is longer than a page. it works in my about section but not in the blog… It’s a cool theme and i really don’t want to get rid of it but I may have to if I can’t fix it,

(The theme is black minimalisation and it works fine on this page https://www.cinexl.net/blog/ )

so any help would be greatly appreciated
Thanks
Pete