1 layer at (0,0) size 800x600
2 LayoutView at (0,0) size 800x600
3 layer at (0,0) size 800x600
4 LayoutBlockFlow {HTML} at (0,0) size 800x600
5 LayoutBlockFlow {BODY} at (8,8) size 784x584
6 LayoutText {#text} at (0,0) size 29x19
7 text run at (0,0) width 29: "Foo "
8 LayoutText {#text} at (29,0) size 71x19
9 text run at (29,0) width 71: "Hello world"