1 layer at (0,0) size 800x600
2 LayoutView at (0,0) size 800x600
3 layer at (0,0) size 800x136 transparent
4 LayoutBlockFlow {HTML} at (0,0) size 800x136
5 LayoutBlockFlow {BODY} at (50,50) size 700x36 [bgcolor=#808080]
6 LayoutBlockFlow {P} at (0,0) size 700x36
7 LayoutText {#text} at (0,0) size 685x36
8 text run at (0,0) width 685: "The document background should be red, and the body gray. The rest of the viewport should be white. The"
9 text run at (0,18) width 304: "document and body should have opacity of 0.3."