Update className for has-csstransform3d tests so it actually works.
Update className for has-csstransform3d tests so it actually works.

The change for issue #313 introduced this bug.

kfranqueiro/dgrid,kfranqueiro/dgrid,dylans/dgrid,kfranqueiro/dgrid,maier49/dgrid,maier49/dgrid,dylans/dgrid,dylans/dgrid,maier49/dgrid