G2 ugly?

Why does G2 totally throw off my theme alignment when I use Blommor01 or Freestyle?

Normally it looks kind of out of place (ie in garland), but in Blommor01 and Freestyle, opening up the gallery page throws everything out of whack.

My menus get shifted, as do my logos, and pretty much everything else. Also, the gallery itself is so far over to the right that you can only see half of it.

Any suggestions on how to make G2 mesh with blommor01 and freestyle? I don't need it to be seamless, but I want it to at least look professional.

Thanks in advance!

-Alex