RE: [css-variables] Empty variable values?

> If you want to have a variable be explicitly invalid but still in the
> OM for some reason, you can explicitly invalidate it with a
> self-reference ("style.var.foo = 'var(foo)';"). This is a horrible
> use-case, though - the only difference between it and unsetting the
> property is that if the property is also set on an ancestor, but you
> don't want that value and want to instead use fallbacks. I can't see
> any reason to ever do that on purpose.

Emulating non-inherited properties without using * { var-xxxx: var(xxxx); }