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 784x584
      LayoutBlockFlow {P} at (0,0) size 784x18
        LayoutText {#text} at (0,0) size 373x17
          text run at (0,0) width 373: "All three of these small canvases should be green, not red."
      LayoutBlockFlow (anonymous) at (0,34) size 784x24
        LayoutText {#text} at (20,6) size 4x17
          text run at (20,6) width 4: " "
        LayoutText {#text} at (44,6) size 4x17
          text run at (44,6) width 4: " "
        LayoutText {#text} at (0,0) size 0x0
layer at (8,42) size 20x20
  LayoutHTMLCanvas {CANVAS} at (0,0) size 20x20
layer at (32,42) size 20x20
  LayoutHTMLCanvas {CANVAS} at (24,0) size 20x20
layer at (56,42) size 20x20
  LayoutHTMLCanvas {CANVAS} at (48,0) size 20x20