Mixins in Vanilla CSS

I’m in the process of a major technical rearchitecture of this website ¹ and as part of that restructure I’m foregoing the use of CSS preprocessor SASS in favor of vanilla CSS. Vanilla web technologies have improved significantly in the past decade. Reducing dependencies like SASS makes my code more portable and future-proof. Lots of features I used SASS for, such as variables and nesting , are…