Re: [csswg-drafts] [css-borders] Add a 'hairline' border-width value (#3720)

We would support adding `hairline` to `<line-width>` and extending `<line-width>` to additional contexts (such as `gap`). We would also support adding the ability to round lengths the same way as `border-width` does. But we don't support adding `env(hairline)` at the moment, and would prefer to address the use cases for it more directly, because we don't want authors adding `round(..., env(hairline))` everywhere because they decided that snapping everything to device pixels was the clever thing to do.

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Received on Wednesday, 4 March 2026 17:45:57 UTC