Validation Errors ...

I am getting these errors like when try to validate my css. mainly in template.css and gk_stuff.css

Property -webkit-border-radius doesn't exist: 2px 2px 2px 2px
and Property -moz-border-radius doesn't exist: 2px 2px 2px 2px

Property -webkit-text-size-adjust doesn't exist: auto auto
Property -webkit-text-stroke-width doesn't exist: 0 0
Property -webkit-text-decorations-in-effect doesn't exist: 0 0
Property -webkit-border-horizontal-spacing doesn't exist: 0 0
Property -webkit-border-vertical-spacing doesn't exist: 0 0
Value error: width -6% negative values are not allowed: -6% -6%

Like i got many validation errors is the template not css validated. i need help in making it css validated. i thought all the templates are css validated