HTML and CSS Reference
In-Depth Information
Percentage Values
A percentage value is expressed as a
<number>
followed immediately by a percent sign (
%
).
There should never be any space between the number and the percent sign. A percentage
value will always be computed relative to something else. For example, declaring
font-size:
120%;
for an element sets its font size to 120% of the computed
font-size
of its parent ele-
ment. Some properties may restrict the values to be non-negative.
