Re: [csswg-drafts] [css-fonts] `system-ui` behavior is undesired for some users (#3658)

> Apart from some typeface design issues, the system-ui value ties the typeface to the "system" fonts, which takes ability away from users to customize the typeface to their preference using sans-serif or serif. This is truly a shame.

That is a fault on operating system and browser vendors, it has no relation to how system-ui should behave.

> While designers and developers may intend to use specific typefaces for ease of managing various font issues, I would rather websites and applications provide more choices to users. Standards and browsers should also contribute to this effort.

In that case, designers and developers should use sans-serif and serif without system-ui. Still not an issue with W3C definition.

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This discussion has derailed from a technical discussion of W3C spec to user preferences. IMO, even though system-ui behaviour is bad on Windows, we still require system-ui as a font family option *if* developers and designers want to mimic the original feel of the user's operating system (with or without user preference), and that is definitely a valid use case to discard the notion of deprecating system-ui. If user want to change how system-ui behave, then it should be the task of operating systems and browser vendors on how to do so.

This is not an issue that should be discussed in here at all.


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Received on Wednesday, 17 September 2025 06:56:23 UTC