@tuanphan
The url is now: https://www.bcaexhibits.org/objects-revealed-styling-test, password: ObjectsRevealed_21
As you can see, I've been trying an alternative route where I treat the background image to the section as I would to the body element. However, this isn't working either - I want the image to repeat but nothing I'm doing seems to effect the actual background of the section.
Even though I'm trying this other route, ideally, I would still rather set section backgrounds to transparent as it helps with design consistency and also keeps the content structure better defined.