> The point is they are not even compliment to their "own" spec. They are part of whatwg.

I think web devs have too much faith in the "standard"; the WHATWG specifies anything supported by two implementations, and with Google controlling Mozilla that already feels somewhat unfair...

> Write a page on chrome, works 90% on Firefox. But will likely works 10% on safari.

Disregarding the issue that you're writing pages that only 90% work on anything but Chrome... do you have any examples of Safari misbehaving?