1 layer at (0,0) size 800x600
2 RenderView at (0,0) size 800x600
3 layer at (0,0) size 800x51
4 RenderBlock {HTML} at (0,0) size 800x51
5 RenderBody {BODY} at (8,16) size 784x19
6 RenderBlock {P} at (0,0) size 784x19
7 RenderText {#text} at (0,0) size 403x19
8 text run at (0,0) width 403: "The first line of this paragraph should have a green background."