CSS width property

Description of property definition and use

The width property sets the width of the element.

Note: width properties do not include padding, borders, and margins!

Value	Describe
auto	The default. The browser calculates the actual width.
length	Define the width in px, cm, and other units.
%	Defines the percentage width based on the width of the containing block (parent element).
inherit	Specifies that the value of the width property should be inherited from the parent element.

The numbers in the table support the first browser version number of the property.

Attributes
width	1.0	4.0	1.0	1.0	3.5

Set the height and width of a paragraph:

p.ex
{
height:100px;
width:100px;
}

Use percentages to set the width of an element
This example shows how to use a percentage value to set the width of an element.

CSS tutorial: CSS Dimension

CSS tutorial: CSS Box model

CSS Reference Manual: Height Properties