[csswg-drafts] Would it make sense to add `middle-with-baseline` or `baseline-middle` to the spec for vertical-align? (#11518)

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

== Would it make sense to add `middle-with-baseline` or `baseline-middle` to the spec for vertical-align? ==
According to https://stackoverflow.com/a/47309461, `-webkit-baseline-middle` is defined in Chrome and `-moz-middle-with-baseline` is defined in Firefox to align the vertical midpoint of the box with the baseline of the parent box plus half the x-
height of the parent, as was defined in CSS 2.1.

It seems that these values are used by these browsers in their internal style-sheets when the deprecated attribute `align` is set to `middle` for an `embed` element.

The spec doesn't mention these values, but considering their use across multiple browsers, I'm wondering if it makes sense to actually define them anyway. I know browser engines usually follow the spec, but it's not unprecedented for it to go the other way. I just feel like it may be good to define these without browser prefixes, so bugs can be open with the relevant browsers to remove the prefixes, as browsers are moving away from prefixed values.

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/11518 using your GitHub account


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Received on Thursday, 16 January 2025 21:55:57 UTC