layer at (0,0) size 800x600
  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x60
  RenderBlock {HTML} at (0,0) size 800x60
    RenderBody {BODY} at (8,8) size 784x36
      RenderBlock {OL} at (0,0) size 784x36
        RenderListItem {LI} at (40,0) size 744x36
          RenderBlock (anonymous) at (0,0) size 744x18
            RenderListMarker at (0,0) size 0x14
            RenderInline {I} at (0,0) size 76x18
              RenderInline {U} at (0,0) size 76x18
                RenderText {TEXT} at (0,0) size 76x18
                  text run at (0,0) width 76: "Hello world"
            RenderText {TEXT} at (0,0) size 0x0
          RenderBlock {OL} at (0,18) size 744x18
            RenderListItem {LI} at (40,0) size 704x18
              RenderListMarker at (0,0) size 0x14
              RenderText {TEXT} at (0,0) size 59x18
                text run at (0,0) width 59: "Goodbye"