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2 RenderView at (0,0) size 800x600
3 layer at (0,0) size 800x600
4 RenderBlock {HTML} at (0,0) size 800x600
5 RenderBody {BODY} at (8,8) size 784x576
6 RenderBlock {DIV} at (0,0) size 784x21 [color=#FF0000]
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8 text run at (0,0) width 81: "Hello world"
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11 text run at (0,0) width 240: "The number of matched rules is: 1"