layer at (0,0) size 800x600
  LayoutView at (0,0) size 800x600
layer at (0,0) size 800x600 layerType: background only
layer at (8,8) size 160x32
  LayoutBlockFlow (positioned) zI: -1 {DIV} at (8,8) size 160x32 [bgcolor=#FF0000]
layer at (0,0) size 800x600 layerType: foreground only
  LayoutBlockFlow {HTML} at (0,0) size 800x600
    LayoutBlockFlow {BODY} at (8,8) size 784x584
      LayoutBlockFlow {DIV} at (0,0) size 784x38 [bgcolor=#00FF00] [border: (1px solid #00FF00)]
        LayoutBlockFlow {FORM} at (1,1) size 782x20
          LayoutText {#text} at (0,0) size 640x19
            text run at (0,0) width 640: "There should be no red on this page. Form element should have border-bottom set to 1em in quirks mode."