layer at (0,0) size 800x600
  RenderCanvas 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
      RenderBlock {FORM} at (0,0) size 784x18 [bgcolor=#00FF00]
        RenderBlock {P} at (0,0) size 784x18
          RenderText {TEXT} at (0,0) size 353x18
            text run at (0,0) width 202: "The content of this form should "
            text run at (202,0) width 151: "have a lime background"
