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 (anonymous) at (0,0) size 784x20
        RenderText {#text} at (0,0) size 300x19
          text run at (0,0) width 300: "There should be a 100x100 green block below."
      RenderBlock {DIV} at (0,20) size 784x0
      RenderBlock {DIV} at (0,20) size 100x100 [bgcolor=#008000]