Font Weight

The font-weight property sets the thickness of text characters.

Value	Description
normal	Defines normal characters. This is default
bold	Defines thick characters
bolder	Defines thicker characters
lighter	Defines lighter characters
100	a numeric definition of thickness
200	a numeric definition of thickness
300	a numeric definition of thickness
400	a numeric definition of thickness (equivalent to the 'normal' keyword)
500	a numeric definition of thickness
600	a numeric definition of thickness
700	a numeric definition of thickness (equivalent to the 'bold' keyword)
800	a numeric definition of thickness
900	a numeric definition of thickness