The background extends behind the border.

The background extends to the inside edge of the border.

The background extends only to the edge of the content box.

The background is clipped to the foreground text. Some other text in a sub-element
The background is clipped to the foreground text. Some other text in a sub-element
The background is clipped to the foreground text. Some other text in a sub-element
Testing text.
The is nested text that should still be clipped to the background