layer at (0,0) size 800x600
  LayoutView at (0,0) size 800x600
layer at (0,0) size 800x256
  LayoutBlockFlow {HTML} at (0,0) size 800x256
    LayoutBlockFlow {BODY} at (8,16) size 784x232
      LayoutBlockFlow {P} at (0,0) size 784x18
        LayoutText {#text} at (0,0) size 682x17
          text run at (0,0) width 682: "Test passes if the blue box is horizontally centered inside black box and there is no red visible on the page."
layer at (8,50) size 294x198
  LayoutBlockFlow (relative positioned) {DIV} at (0,34) size 294x198 [border: (3px solid #000000)]
layer at (107,53) size 96x96
  LayoutBlockFlow (positioned) {DIV} at (99,3) size 96x96 [bgcolor=#0000FF]