layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x53
  RenderBlock {HTML} at (0,0) size 800x53
    RenderBody {BODY} at (8,16) size 784x21
      RenderBlock {P} at (0,0) size 784x21
        RenderBlock {INPUT} at (4,3) size 13x13 [bgcolor=#00FF00]
        RenderText {#text} at (20,1) size 4x19
          text run at (20,1) width 4: " "
        RenderInline {SPAN} at (0,0) size 365x19 [bgcolor=#00FF00]
          RenderText {#text} at (24,1) size 365x19
            text run at (24,1) width 365: "Everything in this paragraph should have a green background"