layer at (0,0) size 800x600
  LayoutView at (0,0) size 800x600
layer at (0,0) size 800x600
  LayoutBlockFlow {HTML} at (0,0) size 800x600
    LayoutBlockFlow {BODY} at (8,8) size 784x576
      LayoutBlockFlow {P} at (0,0) size 784x40 [border: (10px solid #008000)]
        LayoutText {#text} at (10,10) size 288x19
          text run at (10,10) width 288: "I should be surrounded by a thick green border."