Typographica uses a large font size for the introductory paragraphs of its articles,
and then reverts to a normal size for the rest of text.
Heading to Body Font-Size Ratio
To better understand the relationship between heading and body font size,
we divided each Web site՚s heading font size by its body font size. We took
the average of these ratios and derived a rule of thumb for you to work
with:
Heading font size ÷ Body copy font size = 1.96
The overall value, then, is 1.96. This means that when you have chosen a
font size for your body copy, you may want to multiply it by 2 to get your
heading font size. This, of course, depends on your style; the rule of thumb
won՚t necessarily give you the optimal size for your particular design.
Another option is to use a traditional scale (6, 7, 8, 9, 10, 11, 12, 14, 16, 18,