nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqnet90jrghsteuatgvfllundppya2rgfwj86vv9jvef7e0w6065us7lekdt (nprofile…ekdt) it's hidden within the Spec: https://drafts.css-houdini.org/css-properties-values-api/#initial-value-descriptor
> The initial-value must be computationally independent.
"rem" is not computationally independent. it depends on the font-size set on the root element