How to add vertical lines within the configurable list that separate each question?

Also, if there's a way to add vertical lines within the configurable list that separate each question (a vertical line separating 'therapeutic area' from 'brand name' and so on and so forth)

To add vertical line add this CSS code inside of configurable list Custom CSS field:

table td

{

border-left: 1px solid #000;

border-right: 1px solid #000;

}

After that you for will look like this.

Hope this will help. Let us know if you need further assistance.