Unit |
Description |
% |
percentage |
in |
inch |
cm |
centimeter |
mm |
millimeter |
em |
1em is equal to the current font size. 2em means 2 times the size of the current font. E.g., if an element is displayed with a font of 12 pt, then '2em' is 24 pt. The 'em' is a very useful unit in CSS, since it can adapt automatically to the font that the reader uses |
ex |
one ex is the x-height of a font (x-height is usually about half the font-size) |
pt |
point (1 pt is the same as 1/72 inch) |
pc |
pica (1 pc is the same as 12 points) |
px |
pixels (a dot on the computer screen) |