Originally Posted by JSWolf
Actually, it is easier to use a margin of 0 then it is to use a margin of something else and let the @page take care of things. One advantage of having a margin of 0 is you know you've got it right when you proof the format. The the @page just goes in and does it's thing and the margins are sorted.
Really, it's easier to set the default margin I want in Calibre and forget about it. I'm not really familiar with the @page thing.