layer at (0,0) size 800x600
  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x8
  RenderBlock {HTML} at (0,0) size 800x8
    RenderBody {BODY} at (8,8) size 784x0
      RenderBlock (floating) {DIV} at (0,0) size 20x20 [border: (2px solid #FF0000)]
        RenderImage {IMG} at (2,2) size 16x16
      RenderText {TEXT} at (0,0) size 0x0
