This is font-size xx-small

This is font-size x-small

This is font-size small

This is font-size medium

This is font-size large

This is font-size x-large

This is font-size xx-large


This is font-sizexx-small

This is font-sizex-small

This is font-sizesmall

This is font-sizemedium

This is font-sizelarge

This is font-sizex-large

This is font-sizexx-large


Absolute and relative values are easy.

However, there's a lot to be said for
the convenience of percentages.


1/2 inch

1 centimeter

25 millimeters

35 pixels

2 exes

2 ems