The background extends to the outside edge of the border (but underneath the border in z-ordering).
The background extends to the outside edge of the border (but underneath the border in z-ordering).
MDN
The background is painted within (clipped to) the content box.
The background is painted within (clipped to) the content box.
MDN
No background is drawn below the border (background extends to the outside edge of the padding).
No background is drawn below the border (background extends to the outside edge of the padding).
MDN
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.
MDN