Christoph Päper
Christoph Päper
In the [2003 WD of CSS Content](https://www.w3.org/TR/2003/WD-css3-content-20030514/#strings), it was anticipated that the `string-set` property would take as its value a list of pairs of custom ident and _source_: > The...
> [`@property`](https://drafts.css-houdini.org/css-properties-values-api-1/#at-ruledef-property) rules require a [`syntax`](https://drafts.css-houdini.org/css-properties-values-api-1/#descdef-property-syntax) and [`inherits`](https://drafts.css-houdini.org/css-properties-values-api-1/#descdef-property-inherits) descriptor; > if either are missing, the entire rule is invalid and must be ignored. This requirement seems *very* unlike any other...