The CSS background properties define the background effects of an element.
CSS Background Properties
The CSS background properties allow you to control the background
color of an element, set an image as the background, repeat a background image
vertically or horizontally, and position an image on a page.
Browser support: IE: Internet Explorer, F: Firefox, N: Netscape.
W3C: The number in the "W3C" column indicates in which CSS recommendation
the property is defined (CSS1 or CSS2).