css Errors

When I do a validation by w3c I have found a lot of errors that your pluguin cause.
Please fix it, because I don’t want to fix it by myfelfs every time after update.

CSS: Unknown pseudo-ele`ment or pseudo-class :nth-last-child
CSS: text-underline: Property text-underline doesn’t exist
CSS: moz-box-shadow: Property moz-box-shadow doesn’t exist
CSS: Unknown pseudo-element or pseudo-class :nth-of-type
CSS: Unknown pseudo-element or pseudo-class :nth-last-of-type
html body .bvi-body[data-bvi-theme=green] * :link
html body .bvi-body[data-bvi-theme=white] * :link
html body .bvi-body[data-bvi-theme=black] * :link
html body .bvi-body[data-bvi-theme=blue] * :link
html body .bvi-body[data-bvi-theme=brown] * :link