BuddyPress.org

I have googled this and I understand that the buddypress structure is suppose to be in the buddypress.css file. However, I can’t find the css markup in buddypress.css so, where else would it be. I have alignment issues with my theme that I need to correct. Can’t do it unless I can find the proper markup. I am also trying to get the rest of buddypress to look very similar to me wordpress theme. I have used the bp capatibility tool but, useless to me in my opinion. I can’t give links to the issue because the site is only open to admins at this time. I am using wordpress 3.7.1 and bp1.8.1. Any help would be appreciated. I have posted an image to show you the alignment issue.