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      LineBox: (8,18)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,19)->(83 x 16)
          InlineText: (Dummy text.)
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      LineBox: (8,54)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,55)->(83 x 16)
          InlineText: (Dummy text.)
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      LineBox: (8,90)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,91)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,108)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,126)->(971,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,127)->(971 x 16)
          InlineText: (Scroll this document. A line of blue should remain stuck at the top of the viewport the whole time, and there should be no red below, just a block of green.)
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      LineBox: (38,162)->(123,15)
        InlineLayoutBox: (anonymous) (S) (baseline=15) (38,162)->(123 x 18)
          InlineText: (          X           X)
      LineBox: (38,177)->(123,15)
        InlineLayoutBox: (anonymous) (baseline=15) (38,177)->(123 x 18)
          InlineText: (          X           X)
      LineBox: (38,192)->(59,15)
        InlineLayoutBox: (anonymous) (E) (baseline=15) (38,192)->(59 x 18)
          InlineText: (          X)
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      LineBox: (38,207)->(123,15)
        InlineLayoutBox: (anonymous) (S) (baseline=15) (38,207)->(123 x 18)
          InlineText: (     X           X     )
      LineBox: (38,222)->(123,15)
        InlineLayoutBox: (anonymous) (baseline=15) (38,222)->(123 x 18)
          InlineText: (     X           X     )
      LineBox: (38,237)->(59,15)
        InlineLayoutBox: (anonymous) (E) (baseline=15) (38,237)->(59 x 18)
          InlineText: (     X     )
    BlockBox: <div> (block) (I) (8,252)->(195 x 45) effMargin=[0.0, 0.0, 0.0, 0.0]  styleMargin=[0.0, 0.0, 0.0, 0.0] 
      LineBox: (38,252)->(159,15)
        InlineLayoutBox: (anonymous) (S) (baseline=15) (38,252)->(159 x 18)
          InlineText: (XXXXXXXXXXX            )
      LineBox: (38,267)->(115,15)
        InlineLayoutBox: (anonymous) (baseline=15) (38,267)->(115 x 18)
          InlineText: (                       )
      LineBox: (38,282)->(55,15)
        InlineLayoutBox: (anonymous) (E) (baseline=15) (38,282)->(55 x 18)
          InlineText: (           )
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      LineBox: (8,315)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,316)->(83 x 16)
          InlineText: (Dummy text.)
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      LineBox: (8,351)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,352)->(83 x 16)
          InlineText: (Dummy text.)
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      LineBox: (8,387)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,388)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,405)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,423)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,424)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,441)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,459)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,460)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,477)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,495)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,496)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,513)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,531)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,532)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,549)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,567)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,568)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,585)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,603)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,604)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,621)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,639)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,640)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,657)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,675)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,676)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,693)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,711)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,712)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,729)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,747)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,748)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,765)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,783)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,784)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,801)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,819)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,820)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,837)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,855)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,856)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,873)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,891)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,892)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,909)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,927)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,928)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,945)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,963)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,964)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,981)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,999)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1000)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1017)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1035)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1036)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1053)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1071)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1072)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1089)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1107)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1108)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1125)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1143)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1144)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1161)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1179)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1180)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1197)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1215)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1216)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1233)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1251)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1252)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1269)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1287)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1288)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1305)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1323)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1324)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1341)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1359)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1360)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1377)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1395)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1396)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1413)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1431)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1432)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1449)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1467)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1468)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1485)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1503)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1504)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1521)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1539)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1540)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1557)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1575)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1576)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1593)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1611)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1612)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1629)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1647)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1648)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1665)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1683)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1684)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1701)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1719)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1720)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1737)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1755)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1756)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1773)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1791)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1792)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1809)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1827)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1828)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1845)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1863)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1864)->(83 x 16)
          InlineText: (Dummy text.)
    BlockBox: <p> (block) (I) (8,1881)->(1008 x 36) effMargin=[18.0, 0.0, 0.0, 0.0]  styleMargin=[18.0, 0.0, 18.0, 0.0] 
      LineBox: (8,1899)->(83,18)
        InlineLayoutBox: (anonymous) (SE) (baseline=12) (8,1900)->(83 x 16)
          InlineText: (Dummy text.)
