How can I know which CSS property needs vendor prefixes?

Answer 1

check out on the W3Schools (go on google and type: propertyname w3schools) if the vendor prefixe is required for that specific property or not

Answer 2

Thanks alot :)
I thought there's must be some other way or some list of it.

Answer 3

as browsers constantly update, they constantly remove the need of the vendor prefixes of specific properties, that's why there's no definitive list for it :)