Why doesn't this font-family work?

Question

https://code.sololearn.com/WB6m0fBWyb9u/?ref=app

Answer 1

Don't write in css p .serif and p .fantasy.
Write just .serif and .fantasy
Also, I think Blippo needs to be imported to use it.

It should work like that.

Answer 2

https://code.sololearn.com/W1qW0zQuFN5l/?ref=app

Answer 3

You have to import the "Blippo" font family in order to use it.