4.1 Numbers

There are two types of numbers in CSS: integers ("whole" numbers) and reals (fractional numbers). These number types serve primarily as the basis for other value types, but, in a few instances, raw numbers can be used as a value for a property.

In CSS2.1, a real number is defined to be an integer that is optionally followed by a decimal and fractional numbers. Therefore, the following are all valid number values: 15.5, -270.00004, and 5. Both integers and reals may be either positive or negative, although properties can (and often do) restrict the range of numbers they will accept.

Cascading Style Sheets
Beginning CSS: Cascading Style Sheets for Web Design (Wrox Beginning Guides)
ISBN: 0470096977
EAN: 2147483647
Year: 2003
Pages: 135
Authors: Richard York

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