This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
The line-height property can take a <number> value. The CSS spec says that: A <number> can either be an <integer>, or it can be zero or more digits followed by a dot (.) followed by one or more digits. However when using a number that is an integer, the validator flags this as an error. e.g. line-height:1; is marked as an error whereas line-height: 1.0; is fine
This problem has been reported already this week. I hope it can be fixed soon. *** This bug has been marked as a duplicate of 2272 ***