19 This tests that top layer elements are stacked correctly even if nested in the DOM tree.
20 The test passes if you see no red rectangles and see
3 rectangles stacked in the following order (from bottom to top): yellow, blue, green.
22 <div class=
"pseudodialog" style=
"top: 100px; background-color: yellow"></div>
23 <div class=
"pseudodialog" style=
"top: 150px; left: 50px; background-color: blue"></div>
24 <div class=
"pseudodialog" style=
"top: 200px; left: 100px; background-color: green"></div>