As of now, transition code doesn't seem to follow a variablized, standard approach:
https://codesearch.wmflabs.org/skins/?q=transition&i=nope&files=&repos=Skin:MinervaNeue
Let's fix this by
- relying on WikimediaUI Base style variables and
- using those variables consistently.
Additionally
- making sure that cross-browser transition mixin is used.