Created by: ffoodd
Only a POC to check if using fallback values instead of explicit custom properties declarations could save bytes.
The rationale to switch to fallback values or not is the number of occurrences: (, + value) × n occurrences should be longer than the whole explicit declaration. I did not count it for now but that should IMHO be the decision tree.
The only exception would be font-sizes since RFS could behave differently depending on the value. Using its output as a fallback isn't safe.
Let's check Bundlewatch, now :D