layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 308x600
  RenderBlock {HTML} at (0,0) size 308x600
    RenderBody {BODY} at (8,8) size 100x584
      RenderBlock {DIV} at (0,0) size 100x584 [bgcolor=#FFFF00]
      RenderBlock (floating) {DIV} at (100,10) size 100x100 [bgcolor=#008000]
      RenderBlock (floating) {DIV} at (100,474) size 100x100 [bgcolor=#008000]
      RenderBlock (floating) {DIV} at (200,10) size 100x100 [bgcolor=#800080]
      RenderBlock (floating) {DIV} at (200,474) size 100x100 [bgcolor=#800080]