SELECT properties question

I have an especially long select drop down list. As it isn’t possible for me to shorten the list, we made it possible to autosearch — once you begin typing the name of the option you wish to select, it will jump to that option. However, I was wondering if it was possible to center the drop down list around the autosearched-for item? Currently, if the item searched for is below the current selection, it will be highlighted at the bottom of the drop down menu, and if the item searched for is above the current selection it will be highlighted at the top of the menu.

Thanks for any help!

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