Css validation error - whitespace in font family not in quotes - but it is!

got w3c css validation error as above

here is css:
font-family: “Trebuchet MS”, Helvetica, sans-serif;

in my editor “Trebuchet MS” is in red to indicate a problem - what is it??
thanks

Did you copy and paste the quoted font? If so, try deleting the quotes and re-entering them manually. Maybe the quotes that were pasted are not typical quotation marks (part of the ASCII standard).

no I didn’t, and yeah I deleted and re-typed - it’s doing it for “lucida grande” also, which is a font from my wordpress theme . . .
oh well guess I can’t use the css validation badge!
thanks

Is this online? We could take a look if you like. Usually I paste text/code into a plain text editor first to make sure it’s clean. But in this case, it’s worth just closing the code editor and opening it again. sometimes that helps it. There doesn’t seem to be an error there.

Off Topic:

Validation badges kind of suck anyway. I wouldn’t put them on a site. It’s a bit like receiving a compliment and then writing it on a postIt note and wearing it on your forehead.