What if Google fonts didn't load?

Question

Google

What if Google fonts didn't load? How to make an airbag? If a person came in and sees emptiness instead of text.

Answer 1

Yes, it seems that no one forbids using the list of fonts, one is not available, use the next one.
font-family: Roboto, ..., sans-serif;

Answer 2

Specify an additional font, and at the end - the family, just in case

p {
    font-family: "Times New Roman", Times, serif;
}

Answer 3

the fact is that the glitch was such that there were several spare fonts, but the first one was not displayed and the site looked empty