How to set font weight in css selector by condition?

Question

css

Please tell me if css supports something like this

.selector
{
      font-family:FontName1 regular, FontName2 bold, FontName3 bold italic...и т д;
}

That is, if a person does not have a FontName1 font in the system, FontName2 would be used, but already with boldness.
Or only through fontsquirell to generate fonts with each style?

Answer 1

No, this is not supported.
Use system fonts , or include your own with @font-face.