You need to check the ePub groups to find the CSS that is supported in ePubs. I suspect it is only a subset of CSS as some of it would not be used in ebooks.
As far as using a background in an ebook on an eInk reader I would say that it would not work well even if supported. Even the new Pearl eInk screens only support 16 levels of gray, so most background textures would just clutter the screen and make it difficult to read. It might work for a screen that supports 256 colors, but not a 16 grayscale.
|