I’m very late to the party, but I wrote about this back in early 2016! https://csswizardry.com/2016/02/mixins-better-for-performance/ https://csswizardry.com/20

I’m very late to the party, but I wrote about this back in early 2016! https://csswizardry.com/2016/02/mixins-better-for-performance/ https://csswizardry.com/2016/02/mixins-better-for-performanc...