Inherit font-family property if font not available

I’m trying to get something like this to work:

body {      font-family: Verdana, Arial, sans-serif; }  p {      font-family: Helvetica, inherit; } 

Basically if “Helvetica” is not available on the client’s browser, I want the font-family to be inherited from a parent. But it seems to me that I can’t use “inherit” in a font priority list. How can I achieve something like this without having to copy paste font-family from body?