layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x584
      RenderText {#text} at (0,0) size 581x19
        text run at (0,0) width 581: "There should be no thumbsliders below, you should only see the words \"Hello World\" twice. "
      RenderBR {BR} at (0,0) size 0x0
      RenderBR {BR} at (0,19) size 0x19
      RenderBlock {SPAN} at (0,38) size 73x19
        RenderText {#text} at (0,0) size 73x19
          text run at (0,0) width 73: "Hello World"
      RenderBR {BR} at (73,52) size 0x0
      RenderBlock {SPAN} at (0,57) size 73x19
        RenderText {#text} at (0,0) size 73x19
          text run at (0,0) width 73: "Hello World"
      RenderText {#text} at (0,0) size 0x0
      RenderText {#text} at (0,0) size 0x0
      RenderText {#text} at (0,0) size 0x0
