The background extends to the outside edge of the border (but underneath the border in z-ordering).
The background is painted within (clipped to) the content box.
No background is drawn below the border (background extends to the outside edge of the padding).
The background-origin CSS property determines the background positioning area, that is the position of the origin of an image specified using the background-image CSS property.
Note that background-origin is ignored when background-attachment is fixed.