Section 12.4.3 :first-child is an element that precedes all of its siblings (if any) but browsers do not implement that, they implement an element that precedes all of its sibling elements (if any) Same issue for :last-child and :only-child Section 12.2 Is an element containing only shadow elements empty? </Daniel>Received on Thursday, 13 November 2014 13:07:29 UTC
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