Fills up the background of the whole window
The page background fills up the whole browser window i.e. not just the page content but the surrounding areas of the browser window. You may use it to apply a background texture, for example.
The horizontal alignment of the background image (Centre, Left or Right)
||The image can be repeated horizontally and/or vertically to fill up the whole browser window|
||Indicates whether the background stays in place or moves along with the content when a page is long enough that it can be scrolled vertically|