@tctco Thank you for taking the time to respond. I appreciate it.
As it turns out I had half of that code (+ additioncal css for creating a border), but the additional lines added to the css in the link did the trick!
For anyone else who wants to use Echo’s code listed in the link, please make one edit when you save it as a snippet.
This line: overflow: overlay; / new added */
should be this: overflow: overlay; /* new added */
(there is a missing * after the /.