[css-fonts-4] Unclear serialisation of calc expressions in `@font-face` font-stretch/style/weight descriptors

[mozilla-apprentice]

A resolution was made for csswg-drafts/#7964.

[css-fonts-4] Unclear serialisation of calc expressions in `@font-face` font-stretch/style/weight descriptors

• RESOLVED: math function simplifcation for descriptors is as if they were specified properties, and descriptors with math functions use the specified-value serialization rules

Discussion.

---

To file a bug automatically for these resolutions, add the bug label to the issue.

If no bug is needed, the issue can be closed.