Re: [CSS21] Are vendor-specific extensions invalid?

Christof Hoeke wrote:
> I guess a WARNING instead of an ERROR for these cases would be better, 
> would it not? 

Only if the definition of CSS 2.1 stylesheet validity is changed. A 
validator should emit errors when a document is not valid.

> A  sheet would still not be "valid" - just "wellformed" 
> though.

It might be useful to have a tool that could check documents can be 
parsed according to the CSS 2.1 specification. That would be a different 
tool to a validator which checks documents are valid according to the 
CSS 2.1 specification.

--
Benjamin Hawkes-Lewis