Sniffing cssFloat on a node, thx Bill, !strict, fixes #16540.

Squashed commit of [31127] and [31144] aka:
(cherry picked from commit aaa694f088faced90b40ac6c866760095881c60c)
(cherry picked from commit b8a2a4ab16ca6a2f774f6b173c400720a36b51b7)