Quote:
Originally Posted by bookman156
So I'm not sure where this idea that EPUB 2 is based on CSS 2.1 comes from
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Well, there is no CSS Standard for Epub2. Many Readers use RMSDK from Adobe and even this is depending on the version. RMSDK adopts a lot of CSS 2 and very very little things from CSS3, and other readers do implement their own subset fo CSS and are doing the whole formatting by their own often by ignoring the internal stylesheet and using their own stylesheet.
The way its chosen now is closest to RMSDK 2.x and if you wanna sell books working on a lot of different readers its a good way to stick there.