I am trying to "fix" the filter box on a custom select to the top of the screen when scrolling up the list.  I have very long lists and when the user edits a record the value selected can be way down the list.  I need the search box to remain at the top so it is available to the user.  I have tried using libraries like Sticky-Headers, but they do not seem to work.  Is there a native way to make the filter box stick?

Thanks,

Darren