Yes, sorry, I was assuming knowledge of Sass etc. When I first saw this link I thought “Hang on a sec., this says ‘First Public Working Draft’, but hasn’t this

Yes, sorry, I was assuming knowledge of Sass etc. When I first saw this link I thought “Hang on a sec., this says ‘First Public Working Draft’, but hasn’t this spec. been around for ages?” I figured people might make the mistake that this was something new that the W3C were only just getting around to rather than something that has been cooking for a long time. Didn’t mean to imply that the spec. itself sprang up out of nowhere – it was definitely based on the Sass work that came before it, and you have been able to use this syntax with Sass for a very long time!