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| text run at (0,0) width 574: "In this test, you should see three blocks that are centered horizontally within a black box. " |
| text run at (573,0) width 151: "They should be stacked" |
| text run at (0,18) width 372: "vertically with the green box in between two olive boxes. " |
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| text run at (0,36) width 433: "there should be 50 pixels of padding on either side of the box stack." |
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