layer at (0,0) size 1024x768
  RenderView at (0,0) size 1024x768
layer at (0,0) size 1024x768
  RenderBlock {HTML} at (0,0) size 1024x768
    RenderBody {BODY} at (8,8) size 1008x739
      RenderBlock {H1} at (0,0) size 1008x38 [bgcolor=#008000]
        RenderText {#text} at (0,1) size 580x36
          text run at (0,1) width 580: "This text should have a green background."