Hello utnik,
Here is 2 screenshots

On this picture, you can see the background picture : I have several images to test for my client to choose from.
I was thinking of making a template with the elements that don't change (title, etc.).
I put the background image on the page.
But when I do that, the background image appears above even when I send it at the bottom.

So if you have a solution for not to have 1 template = 1 page
I will be very grateful