Fix parsing of some css properties

Fix parsing of some css properties

Our property parser stops at the first match when looking for
enums, so we need to order our values so that we don't end up
with prefixes of longer names being found first.

I noticed this when the parser tried to interpret
background-blend-mode: color-burn; as "color, with junk at the end".

It also affects animation-direction, which is also fixed here.