layer at (0,0) size 800x600
  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x550
  RenderBlock {HTML} at (0,0) size 800x550
    RenderBody {BODY} at (8,8) size 784x534
      RenderBlock (anonymous) at (0,0) size 784x34
        RenderText {TEXT} at (0,0) size 776x34
          text run at (0,0) width 506: "You should see a green cross below (300 pixels wide and 300 pixels tall). "
          text run at (506,0) width 270: "This is a test to ensure that boxes don't"
          text run at (0,17) width 749: "obey the overconstraint correction (margin-right/left should not be corrected when a box is overconstrained)."
      RenderBlock {DIV} at (0,34) size 784x500
        RenderFlexibleBox {DIV} at (100,100) size 100x300 [bgcolor=#008000]
          RenderBlock {DIV} at (-100,100) size 300x100
