CSS corner-shaping

[noamr]

こんにちは TAG-さん!

I'm requesting a TAG review of CSS corner-shaping.

{{One paragraph summary of the feature, ideally copy-pasted from your Explainer.}}

• Explainer¹: https://github.com/noamr/explainers/blob/main/corner-shape-explainer.md
• Specification: https://drafts.csswg.org/css-borders-4/#corner-shaping
• WPT Tests:
• User research:
• Security and Privacy self-review²: https://github.com/w3c/csswg-drafts/blob/main/css-borders-4/corner-shape-explainer.md#self-review-sp-questionnaire
• GitHub repo: https://github.com/w3c/csswg-drafts
• Primary contacts: @noamr (Google)
• Organization/project driving the specification: Google, with active involvement from Apple (@smfr)
• This work is being funded by:
• Primary standards group developing this feature: W3C
• Group intended to standardize this work:
• Incubation and standards groups that have discussed the design:
  • {{ABC CG}}
  • {{DEF WG}}
• Multi-stakeholder support³:
  • Chromium comments: implementing
  • Mozilla comments: CSS corner-shape mozilla/standards-positions#823
  • WebKit comments: supported
  • {{...include feedback/review from developers, implementers, civil society, and others}}
• Major unresolved issues with or opposition to this specification: None
• Status/issue trackers for implementations⁴: https://github.com/w3c/csswg-drafts

Further details:

• I have reviewed the TAG's Web Platform Design Principles
• Previous early design review, if any: https://github.com/w3ctag/design-reviews/issues/####
• Relevant time constraints or deadlines:

You should also know that...

{{Please tell us anything else you think is relevant to this review.}}