In this test, you should see three blocks that are aligned right within a black box. They should
be stacked vertically with the green box in between two olive boxes. The olive boxes and the green box
should be 100x100, and there should be 100 pixels of padding on the right side of the box stack.
black box's top should be aligned with the end of the last line in this parargaph and its left side should begin right after the end of this sentence.