1 layer at (0,0) size 800x600
2 RenderView at (0,0) size 800x600
3 layer at (0,0) size 800x50
4 RenderBlock {test} at (0,0) size 800x50
5 RenderBlock {p} at (0,16) size 800x18 [bgcolor=#00FF00]
6 RenderText {#text} at (0,0) size 268x18
7 text run at (0,0) width 268: "This line should have a green background."