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Text Values
Absolute: pt/pc/cm/mm/in
Relative: px/em/ex/%
 ou can measure most font and text properties in either absolute or relative units. The tables below show the values and their options.
Absolute Units
| unit |
abbreviation |
example |
| points |
pt |
font-size: 12pt
There are 72 points to an inch, 12 points to a pica. |
| picas |
pc |
text-indent: 2pc
There are 12 picas to an inch. |
| centimeters |
cm |
text-indent: 4cm |
| inches |
in |
text-indent: 1in |
| millimeters |
mm |
text-indent: 8cm |
Relative Units
| unit |
abbreviation |
example |
| pixels |
px |
text-indent: 30px
A pixel is one picture element on the display monitor; there are typically between 72 and 90 pixels/inch. |
| em space |
em |
text-indent: 4em
An em space is the width and height of the capital letter M in the current font size and design. |
| x space |
ex |
line-height: 3ex
An ex space is height of the body of the current font size and design, about the height of the lowercase letter x. |
percentage of
parent's value |
XX% |
font-size: 90% | |
