[csswg-drafts] [css-borders-4] Consider constraining radii for concave corner-shape when opposite corners overlap (#12098)

noamr has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-borders-4] Consider constraining radii for concave corner-shape when opposite corners overlap ==
The following CSS would cause the top-right and bottom-left corner to overlap, even without borders:
```css
border-top-right-radius: 70%;
border-bottom-left-radius: 70%;
corner-shape: notch;
```
Basically anything more concave than this:
![Image](https://github.com/user-attachments/assets/c454c761-db55-4b3a-bb2f-9b27d16a3d97)

would result in the corner collapsing on each other.

Since we constraint radius to not overlap in the ordinary round case, we should probably constraint it (or constraint the shape) in this case as well.

(Brought up by @smfr)

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/12098 using your GitHub account


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Received on Thursday, 17 April 2025 19:03:09 UTC