Zachary D. Rowitsch dd03466e63 Implement CSS 2.1 outline properties and border style golden tests with code review fixes (§8.5, §18.4) ...

Add full outline support (outline-style, outline-width, outline-color, outline-offset, outline
shorthand) following the CSS property pipeline: parse → style → layout → display list → rasterize.
Verify all 10 border styles are fully implemented and add 6 golden tests (249-254) covering double
borders, 3D border styles, mixed styles, and outline variations.

Code review fixes: correct outline paint order to CSS 2.1 Appendix E step 10 (after content, not
between borders and content), handle outline-width thin/medium/thick keywords in computed styles,
fix Outline display item format consistency (Display vs Debug), guard against negative outline-offset
producing invalid rects, add missing tests for outline-color invert and keyword width resolution.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-14 01:18:45 -04:00

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