There is a lot more elegant way of finding the scrollbar width. Let me show you how to do it:
1. Maximize your browser window
2. In your browser console enter the following: window.visualViewport.width //So this will equal your screen size in pixels minus the vertical scrollbar width, which in my case is 1903px on Google Chrome with the default styles of the scrollbar. You may have a styled scrollbar with a different width. Check it out!
