Ciao a tutti, non capisco il significato di questo "warnings"...

"Family names containing whitespace should be quoted. If quoting is omitted, any whitespace characters before and after the name are ignored and any sequence of whitespace characters inside the name is converted to a single space. : a.trainer"

riferito a:

font-family: Tw Cen MT Condensed,Agency FB,Bodoni MT Condensed,Arial Narrow;