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RenderText {#text} at (0,0) size 333x17
text run at (0,0) width 333: "The thumb should be in the middle of the scroll bar."
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+layer at (8,94) size 200x200 clip at (8,94) size 185x200 scrollY 200.00 scrollHeight 600
RenderBlock {DIV} at (0,86) size 200x200
RenderBlock {DIV} at (0,0) size 185x600