Do you want to know how the CSS WG works? Fantasai has written about:csswg, An Inside View of the CSS Working Group at W3C.
The CSS Working Group has published an updated Last Call Working Draft of CSS Custom Properties for Cascading Variables (colloquially known as “CSS Variables”). This specification defines custom properties, which are author-defined properties which can accept any value, and the
var() function, which lets authors substitute the value of a custom property into another property.
This new Last Call draft has been published because there have been significant changes to the syntax of custom properties and how they are used in the
var() function—rather than defining custom properties with names like “var-foo”, they now have names like “–foo”, to be consistent with the plan for other custom extensions to CSS. The
CSSVariablesMap interface has also been dropped, in the expectation that a future module extending the concept of custom properties will define something more useful.
Changes since the last Working Draft are listed in the Changes section.
As always, please send feedback to the (archived) public mailing list firstname.lastname@example.org with the spec code (
[css-variables]) and your comment topic in the subject line. (Alternatively, you can email one of the editors and ask them to forward your comment.)