CSS alignment question

[audiodef]

My site, audiodef.com, has a bit of an alignment issue on the home page. When the screen resolution is 1366x768, which is my laptop, the Facebook, G+ and Twitter buttons are more or less horizontal (I had to fix that because they were covering the main menu). On my desktop machines, with larger screens, they appear diagonally. I have no problem with any of this, except, knowing it's not consistent, someone somewhere is going to look at it and it's just going to look screwed up somehow (maybe someone on a tablet).

So what kind of code changes do I need to make to make these three buttons consistent and not ever cover up anything else?
_________________
Gentoo Studio: http://gentoostudio.org
Pappy's Kernel Seeds: http://kernel-seeds.gentoostudio.org
Linux 'Tude Tees: http://skreened.com/geektudetees

A cloud is evaporated water in the sky, thanks.