> In that case it seems that we need something new to replace CSS for layout There's so much that CSS (and browsers in general) do that we take for granted, wh

> In that case it seems that we need something new to replace CSS for layout There's so much that CSS (and browsers in general) do that we take for granted, which is good in one sense but bad since you can't dip below those abstractions and grapple with the layout engine (or garbage collector, or HTML parser, or selector engine) at a low level. You get the whole ball of wax and all that stuff runs all the time, even if you don't actually need it. In my view this is essentially what separates HTML apps from native ones.