HelloIf I am not mistaken, the W3C CSS icon on the debian front page indicates CSS validity. But according to the validator, there are some errors. The error messages given are:
# Line: 492 Context : #leftcol , #navbar , #navbar a , #navbar3 , #navbar3 a Parse Error - -moz-border-radius: 15px; and: # Line: 493 Context : #leftcol , #navbar , #navbar a , #navbar3 , #navbar3 a Parse error - Unrecognized : Regards, Torquil