[css-backgrounds-4] Borders with cut corners #3457
Description
For your information and discussion.
I have noticed that in the Google Developer blog, an article recently published noted a gap in border support in the Web Platform. Namely, the Web Platform currently doesn't support borders with cut corners (as opposed to round or square corners), and the Material Design team is working on using the Houdini API, which is "not ready yet", to provide such borders.
However, I feel that supporting cut corners "natively", in addition to rounded corners, will give Web developers another option in designing their Web pages (not just for Material Design's purposes). Perhaps this can be implemented using additional CSS properties (e.g., cut-border-radius) that work analogously to border-radius.