Relative Font Weight Values
(Century Schoolbook Font)
Here is a paragraph of text set with a default weight of 500.
But now, here is some heavier weight
text, produced using the value "bolder." Alternatively,
we can use the "lighter" value to produce light,
and then even lighter text.
Note that the values "lighter" and
"bolder" do not work at all in MSIE 3.