Browsers use DOM whether you like it or not. The rendering engines are built on eventing model. CSS is what they understand now. We can think of changing that,

Browsers use DOM whether you like it or not. The rendering engines are built on eventing model. CSS is what they understand now. We can think of changing that, but given the history of browsers and HTML standard, I am not very optimistic that such changes can be pushed through easily in a reasonable amount of time.