Remove font-family from CSS files

[Valentina R]

Or give option in settings to not use those rules.

Example:

.wc-appointments-appointment-form-wrap .wc-appointments-appointment-form * {
font-family: -apple-system,BlinkMacSystemFont,”Segoe UI”,Roboto,Oxygen-Sans,Ubuntu,Cantarell,”Helvetica Neue”,sans-serif; }

Requested here.