[Feature Request] CSS Cascade Layers

[KaelWD]

https://developer.mozilla.org/en-US/docs/Web/CSS/@layer

https://caniuse.com/css-cascade-layers

There is a polyfill for older browsers but it doesn't support everything and could be a bit of a pain to set up: https://www.npmjs.com/package/@csstools/postcss-cascade-layers