Within my setup, there are 4 distinct elements: element 1 resides in a fixed header while elements 2, 3, and 4 are part of my form. All of these elements have been customized with select2 (a select box that can be tailored to allow searching). The issue I am encountering is that elements 2, 3, and 4 are overlapping element 1. To address this problem, I need to adjust the z-index solely for element 1 without affecting the other elements. Modifying the z-index in select2.js impacts all elements, which is not desired. Therefore, it is imperative that element 1 remains on top of elements 2, 3, and 4.