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| RenderView at (0,0) size 800x600 | |
| layer at (0,0) size 800x52 | |
| RenderBlock {HTML} at (0,0) size 800x52 | |
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| RenderBlock {P} at (0,0) size 784x20 | |
| RenderText {#text} at (0,0) size 381x19 | |
| text run at (0,0) width 381: "The first line of this paragraph should have a green background." |