layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x18
  RenderBlock {test} at (0,0) size 800x18
    RenderBlock {address} at (0,0) size 800x16 [bgcolor=#00FF00]
      RenderInline {span} at (0,0) size 0x0
    RenderBlock {div} at (0,0) size 800x18
      RenderText {#text} at (0,0) size 268x17
        text run at (0,0) width 268: "This line should have a green background."