Jquery Autocomplete Suggestion Box Hidden Behind Bootstrap Nav Bar

I'm using the Bootstrap 4 theme and I've added a jQuery autocomplete search box to it. The problem I'm having though is the top of the suggest box is showing up behind the nav bar

Solution 1:

Adding this CSS will increase the z-index:

#ui-id-1 {z-index: 9999;}

Fiddle: https://jsfiddle.net/7z7Lj6pw/

Preview