I’ve been thinking:

what happens if someone doesn’t have the font you specify in CSS?  Or what if the browser doesn’t recognize it ? can you just choose any font name even if you don’t have it?

Font-family. that is the answer to all these questions. Font-family.

“font-family The font-family property specifies a list of one or more fonts using the family name of each. The font names are separated by commas. A browser then uses the first font in the list that is installed on its system”

I’d better go and create that family then.