External stylesheets contain cascading stylesheet, or CSS, information used by a browser to display your web page with the styles you intended to use. These styles can be as simple as defining the font and font color, to as complex as layouts with three column without using tables.

There are four different ways CSS information can be supplied. See cascading order of CSS for more information.

The most efficient way to supply a browser with CSS information is by using an external css stylesheet. (Read more…)