font-weight:
@{foobar} :
background-@{foo}:
box-shadow+:
transform+_:

----------------------------------------------------

[
	["property", "font-weight"], ["punctuation", ":"],
	["property", "@{foobar}"], ["punctuation", ":"],
	["property", "background-@{foo}"], ["punctuation", ":"],
	["property", "box-shadow+"], ["punctuation", ":"],
	["property", "transform+_"], ["punctuation", ":"]
]

----------------------------------------------------

Checks for properties.