CSS Tutorial
CSS Backgrounds
Background Properties
background-color: sets background color.background-image: sets background image.background-repeat: controls tile repetition.background-position: sets image position.
Using Images as Backgrounds
Use background-image: url('image.jpg'); to load images.
Examples
body { background-color: #f0f0f0; }
div { background-image: url('bg.jpg'); background-repeat: no-repeat; background-position: center; }