The <body> element has 25px in padding and white background.
First case: As you resize the window the blue element (floated right) should vanished outsize the left edge of the body.
Second case: Once the green element (floated left) right-edge causes the body element to produce a vertical scroll bar the blue element should butt up agaisnt the body elements' right-edge (edge of viewpoint) and not the body content-right-edge.
- Floated right elements overflowing body
- Floated right elements with margin-left overflowing body