layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x48
  RenderBlock {html} at (0,0) size 800x48
    RenderBody {body} at (8,16) size 784x16
      RenderBlock {p} at (0,0) size 784x16
        RenderText {#text} at (0,0) size 411x16
          text run at (0,0) width 411: "The first line of this paragraph should have a green background."