@ayoAyo Ayco
@sangsterBen There are two (maybe 2.5) flavours of this:
- CSS that's incidentally in a JS file and gets translated into Constructable Style Sheets (because the JS community stoned HTML Imports to death).
- "CSS-in-JS" ala Styled Components.
That second version is based on the usual toxic combination of FB's ignorance, misdirections, and recalcitrance. But suffice to say, the first is relatively fast, and the second is *hellishly* slow.