CSS selector based on width?

Question

Is there a CSS rule that would match elements based on their width? If not, would it be interesting to propose that in the standard?

One could do something like

Answer 1

I just saw an example of media queries within a selector, effectively the same thing, although a pseudo-selector would be very nice and likely supplant media queries. I think it would be nice to have a new pseudo-selector :aspect-ratio(4:3) supporting ranges like :aspect-ratio(>4:3). This would be super convenient for styling responsive elements based on their orientation and width to height ratio.