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On a page like this, after scrolling for a little while, the sidebar will suddenly fling to the bottom of the screen and remain fixed:

enter image description here

marked as duplicate by Nathan Tuggy, Robert Longson, Aziz Shaikh, ben is uǝq backwards, Glorfindel Feb 27 '17 at 6:54

This question was marked as an exact duplicate of an existing question.

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