Originally Posted by ldolse
Was just digging into this same problem myself. Seems like the problem with CSS is that it's all about text size, and not page size. There are a lot of scenarios I can think of with books where page size is more important - cover pages like this example, Children's books, other illustrated material, etc. Is SVG the only way to create content where everything scales relative to the page size?
ePub's XHTML and CSS2 subset don't seem to have anything to handle page level layout. (Well, there's some mention of windows and orphans, but that's all I spotted.)
Until ePub is extended some more, I think SVG is our best bet, as it's possible to specify that an SVG image should be scaled to fit the page size.
I haven't had time to play with this properly yet.