[odamizu]

Originally Posted by DiapDealer

More than likely she's talking about the online W3C CSS validation service. That's what Sigil's CSS validation tool uses.

Bingo! When I check my css thru Sigil using W3C CSS validation service, it always gives me "unrecognized media amzn-kf8" and "Property adobe-hyphenate doesn't exist".

I ignore it, my ereaders ignore it, and all is good except the OCD part of me that would rather get a clean bill of health on my css