CSS is not capable of supporting aspect ratios for elements

Hi all,

my apologies if this is being addressed somewhere - I had a look but
couldn't find anything.

Is there anything proposed to allow CSS to be aware of aspect ratio's
that need to be kept? This has been a problem for me in a number of
practical scenario's recently while implementing liquid layouts.

IMGs scale proportionally with max-width. DIVs etc do not, and they
need to sometimes.

Thanks,
Matt