font-weight

Selector	Style	Variables Required
`.font-black`	`font-weight: 900`	-
`.font-bold`	`font-weight: 700`	-
`.font-extrabold`	`font-weight: 800`	-
`.font-extralight`	`font-weight: 200`	-
`.font-light`	`font-weight: 300`	-
`.font-medium`	`font-weight: 500`	-
`.font-normal`	`font-weight: 400`	-
`.font-semibold`	`font-weight: 600`	-
`.font-thin`	`font-weight: 100`	-