Below the colored squares should be partially stacked on top of each other in the following order from bottom to top: blue, orange, yellow. The yellow square should be entirely visible, viewable.

Firefox 1.5, Firefox 2.x, Firefox 3, Opera 9.50, Safari 3.0.4,Chrome 5.0.375.125, Konqueror 3.5.8, Konqueror 4.4.5, Hv3 TKHTML alpha 16, Seamonkey 2.x, NS 7.2, Galeon 2.0.2, Epiphany 2.20 all pass this test.