I thing you got that backwards. CSS supports pixel-precise sizing and positioning. However, CSS also supports sizing and positioning based on the properties of

I thing you got that backwards. CSS supports pixel-precise sizing and positioning. However, CSS also supports sizing and positioning based on the properties of the viewport, which adapt better to different screen sizes. Both approaches have advantages and drawbacks. HTML-tables OTOH does not support pixel-precize positioning, although you can get some of the way if you combine it with transparent gifs, as people used to do before CSS support became widespread.