pages vs posts CSS help!

Hi!

I’m currently modifying a theme and have my layout kinda how I want it, but when I enter a post, the layout changes and there is no spacing between the post and the menu/header.

Where in the CSS can I change this? I want the front page, pages and posts to look the same. Right now, posts looks a bit different. The sidebar is also underneath the post. It should be on the right side like the rest of the page.

LINK to site: http://tinyurl.com/3fj5uzk

Any help will be highly appreciated!

cheers!

-pookey