[csswg-drafts] [css-values-4] Clarify the definition of device pixel (#13896)

cdoublev has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-values-4] Clarify the definition of device pixel ==
I was somewhat suspicious of resolving the value of a [device pixel](https://drafts.csswg.org/css-values-4/#device-pixel) with `1px / devicePixelRatio`, but the discussions in #3720 suggest that I should not. 

However, the definition does not seem to cover the case when there is no output device, unlike [`devicePixelRatio`](https://drafts.csswg.org/cssom-view/#dom-window-devicepixelratio). Wouldn'it be useful to refer to it?

  > 1. If there is no output device, return 1 and abort these steps.

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/13896 using your GitHub account


-- 
Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config

Received on Thursday, 7 May 2026 09:55:09 UTC