If it can't be done with CSS, then how can it be done? How can you apply GPU shader effects to a common div? If we can't apply GPU effects to basic HTML and need to do so on custom things like an arbitrary Canvas concoction, then we may as well rebuild a brand-new rendering engine that can apply GPU effects.

HTML is dead. I see no reason to care about it because we only need <p> tags to get some text across, as just about everything else is used to make a webpage an ad-bomb. So let's just start again with the <p> tag and better gpu integration, and leave everything else out.