layer at (0,0) size 800x600
RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x600
RenderFlexibleBox {HTML} at (0,0) size 800x600 [bgcolor=#FFFFFF]
RenderFlexibleBox {BODY} at (0,0) size 800x600 [color=#FFFFFF] [bgcolor=#008000]
RenderBlock (anonymous) at (0,0) size 486x600 [bgcolor=#000000]
RenderText {TEXT} at (0,0) size 486x17 [bgcolor=#008000]
text run at (0,0) width 486: "You should see white text on a green background that fills the window."
RenderText {TEXT} at (0,0) size 0x0 [bgcolor=#008000]