Thank you Kevin, for the opportunity to provide feedback.
I like the proposed CSS3 specs for backgrounds and borders, especially the radius for corners and background images for border areas. The one thing I would like in the latter is the ability to apply z-index. Lacking that, I’d like to have the behaviour be that the corners would appear ‘on top’ of side images.
I’d like to be able to use a background image in a liquid design where I can make the top, right, bottom, and left border images use 100% of size with corner images covering the border images only in the corners. This would ensure that no matter the size of the viewport, no break would appear between border side images and border corner images.
Thanks again for this opportunity.