For fluid typography, container-type: inline-size makes the wrapper a container query, so its children can use cqi: a unit based on the container rather than the viewport.

text-box-trim: trim-both removes the line-height, while text-box-edge: cap alphabetic measures from capital-letter caps to the alphabetic baseline.

hanging-punctuation lets specified punctuation sit fractionally outside the text block's edge.

font-variant-emoji makes the choice between full-colour and monochrome emoji explicit.

Much of this CSS removes work that used to leak into other parts of a build.