Trying again ...

I prefer semantic (content-based) class and id names instead of functional names (i.e. class names that describe the look aka 'text' or 'transition-050').

What if you decide that all the `transition-050` classes should really have a 40 sec transition?

(To be fair, not everyone agrees with me)

Also, your CSS class names need to be consistent - `transition-050` vs `opacity85`.