font weight
normal -> The default, defines what is considered the weight of the normal
characters.
bold -> Defines thick characters than normal ones
bolder -> Defines thicker characters than normal ones
lighter -> Defines lighter characters than normal ones
[100, 200, 300, 400, 500, 600, 700, 800, 900] -> Goes from thin to thick
characters.
Where 400 is the same as normal.
700 is the same as bold.
900 the same as bolder.
initial -> Sets this property to its default value.
inherit -> Inherits this property from its parent element.