Validator is having hiccups ATM. It is valid, trust me. Try later. If you don't believe me, try some other pages, including the W3 one itself, they all come out

Validator is having hiccups ATM. It is valid, trust me. Try later. If you don't believe me, try some other pages, including the W3 one itself, they all come out as invalid. Edit: The validator works now.