Re: Extending CSS

Anne van Kesteren wrote:

> I don't think it was overlooked. CSS is designed in a way that 
> everything that is not understood will be dropped and therefore doesn't 
> end up in the CSSOM (CSS Object Model). I'm not sure if you really want 
> to make it more complex.

Editing tools care about **all** declarations, valid for the local
parser or rejected. CSSUnknownRule was impossible to implement, but it's
still immensely useful for editing tools and filters.

</Daniel>