- RenderBlock {DIV} at (0,96) size 784x23 [border: (2px solid #FFAAAA)]
- RenderBlock {PRE} at (2,2) size 780x19 [border: (2px solid #AAAAFF)]
- RenderText {#text} at (2,2) size 94x15
- text run at (2,2) width 94: "a b"
+ RenderBlock {DIV} at (0,96) size 784x24 [border: (2px solid #FFAAAA)]
+ RenderBlock {PRE} at (2,2) size 780x20 [border: (2px solid #AAAAFF)]
+ RenderText {#text} at (2,2) size 96x16
+ text run at (2,2) width 96: "a b"