Fixed some floating element issues:   * The clear search bar would disappear when using OS X and scrolling     up past the document top (negative scrollTop)   * The same would happen for the page controls when scrolling past the     bottom of the document
Fixed some floating element issues:
  * The clear search bar would disappear when using OS X and scrolling
    up past the document top (negative scrollTop)
  * The same would happen for the page controls when scrolling past the
    bottom of the document

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