[css-sizing-4] Does aspect-ratio work on the content box or the border box? #4007
Description
@dholbert wrote:
We need to be sure it's clear which box (content-box vs. border-box) the aspect ratio is used for sizing, especially for elements that have an explicit "box-sizing:border-box". I imagine the ratio should always control how an element's content box is sized, since I think that's how aspect ratios work with images... but we should be sure that's explicitly stated.