Background With Changing Elements HTML

Sorry if the title makes no sense, I didn't know how to call this issue, lol.

So... I have this android app which shows a parking lot, with the parking layout as the background and some cars showing "inside" each parking when needed. This is easy to build using different layouts for each parking and changing the image sources from empty to a car, etc.

The thing is... I need to replicate this on a web page, And I have no idea how could I build a background and change images on top of it. I suppose I could make a bunch of divs for each parking, changing the img sources when needed and use the parking lot layout as the background for the whole thing, however I don't know if this would be the best practice, and the whole idea doesn't really sound responsive to me.

Any ideas?

I don't expect/need it to change in real time like you can do with Android, but I do need to replicate the idea of changing images programatically on top of a background.

Thanks!