layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x584
      RenderBlock {DIV} at (0,0) size 784x159 [border: (70px solid #FF0000)]
        RenderText {#text} at (70,70) size 208x19
          text run at (70,70) width 208: "This border should be 5em thick."
      RenderBlock {DIV} at (0,159) size 100x38 [bgcolor=#00FF00]
        RenderText {#text} at (0,0) size 96x38
          text run at (0,0) width 95: "This div should"
          text run at (0,19) width 96: "be 100px wide."
