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  LayoutView at (0,0) size 800x600
layer at (0,0) size 800x1016 backgroundClip at (0,0) size 800x600 clip at (0,0) size 800x600
  LayoutBlockFlow {HTML} at (0,0) size 800x1016
    LayoutBlockFlow {BODY} at (8,8) size 1000x1000
layer at (50,166) size 321x18
  LayoutBlockFlow (positioned) {P} at (50,166) size 320.55x18
    LayoutText {#text} at (0,0) size 321x17
      text run at (0,0) width 321: "You should see a single green square, with no red."
layer at (58,58) size 100x100
  LayoutBlockFlow (positioned) {DIV} at (8,8) size 100x100 [bgcolor=#FF0000]
layer at (58,58) size 100x100
  LayoutBlockFlow {DIV} at (0,0) size 100x100 [bgcolor=#008000]
scrolled to 50,50