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WebKit Features for Safari 27.0
Safari 27.0 adds a local MCP server for AI‑driven automation, a fully stylable `<select>` via `appearance: base-select` and new pseudo‑elements, the `<model>` element for embedding 3D assets, `sizes="auto"` for responsive images, a `shadowrootslotassignment` attribute for declarative shadow roots, and a large set of quality‑focused fixes (844 resolved issues).