Quote:
Originally Posted by JSWolf
But due to a bug in Sigil, CSS with embedded fonts will not validate even if the code is perfect because Sigil is specifying the wrong CSS validation.
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It is not a bug. The stylesheets used for ePUB2 are
based on version 2.1 (or was it 2.0?), but not fully. The @font-face is not an official part of that.
Therefore the validation is correct in that it is labeled as an error. However, checking against CSS 3.0 is worse, since that contains a lot of stuff that isn't part of the ePUB standard.