z-index 42
foo = 3.14159
width: 23%
bar = 1.5%

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

[
	["property-declaration", [
		["property", ["z-index"]],
		["number", "42"]
	]],
	["variable-declaration", [
		["variable", "foo"],
		["operator", "="],
		["number", "3.14159"]
	]],
	["property-declaration", [
		["property", ["width"]],
		["punctuation", ":"],
		["number", "23%"]
	]],
	["variable-declaration", [
		["variable", "bar"],
		["operator", "="],
		["number", "1.5%"]
	]]
]

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

Checks for numbers and percentages.