ho provato a far validare un css dal w3c, ma m dice ke i tag x colorare le scrollbar nn sono validi!!!

Line: 0 Context : body

Property scrollbar-face-color doesn't exist : #ffffee
Line: 0 Context : body

Property scrollbar-shadow-color doesn't exist : #000000
Line: 0 Context : body

Property scrollbar-highlight-color doesn't exist : #000000
Line: 0 Context : body

Property scrollbar-3dlight-color doesn't exist : #ffffff
Line: 0 Context : body

Property scrollbar-darkshadow-color doesn't exist : #ffffee
Line: 0 Context : body

Property scrollbar-track-color doesn't exist : #ffffff
Line: 0 Context : body

Property scrollbar-arrow-color doesn't exist : #000000
???? e da quando in qua????

poi ho applicato ad A {filter: blur;} ma m dice:

Line : 0 property filter does not exist for this profile, but is validated conforming to another profile
cioè? a ki lo posso attribuire???