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Tutorial 22: The Font of Foulness, Part I: Size Matters
Summary
FONT, BASEFONT, BIG and SMALL are works
of the Devil and should never be used. When specifying font sizes,
authors are advised to use percentage sizes in order to have their
fonts scale properly between browsers and between platforms. If you
are updating documents that are already using these elements to use
CSS directives instead, you can use the appropriate percentages (70%
for size 1, 84% for size 2, 100% for size 3, 120% for size 4, 150% for
size 5, 200% for size 6 and 300% for size 7) to mimic the behaviour of
these elements.