layer at (0,0) size 800x600
RenderView at (0,0) size 800x600
-layer at (0,0) size 800x51
- RenderBlock {test} at (0,0) size 800x51 [bgcolor=#00FF00]
- RenderBlock {p} at (0,16) size 800x19
- RenderText {#text} at (0,0) size 314x19
- text run at (0,0) width 314: "The background of the document should be green"
+layer at (0,0) size 800x50
+ RenderBlock {test} at (0,0) size 800x50 [bgcolor=#00FF00]
+ RenderBlock {p} at (0,16) size 800x18
+ RenderText {#text} at (0,0) size 318x17
+ text run at (0,0) width 318: "The background of the document should be green"