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

@webstrand I'm imagining `border-round(<length>)` will return the computed value that you would get with `border-top-width: <length>`.

@GabbeV Authors use exaggerated numbers, I have seen `z-index: 99999999999` lots of times. Lacking a hairline, someone might use `border-round(0.001px)` because it looks good in Chrome. But it won't work in Firefox.

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Received on Friday, 16 January 2026 22:10:26 UTC