layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x50
  RenderBlock {HTML} at (0,0) size 800x50
    RenderBody {BODY} at (8,16) size 784x18 [color=#000080]
      RenderBlock {P} at (0,0) size 784x18
        RenderText {#text} at (0,0) size 227x18
          text run at (0,0) width 227: "The entire canvas should be yellow."