Ahhh, good point. Are you able to provide a screenshot so I can try and mock this up?
EDIT: I figured it out thanks to @victordcq's comments on this thread
They things were to use a view canvas, then set the position of all the rows to relative and the first one to sticky. This will freeze the top row.
Then set the zIndex of the first row to 1, and give it a background color, that way the overlap happens correctly.
Here is my example (8.3 KB)