How to make module position not Collapsible

Hello

This will apply to any of the templates.

Can I make the template non Collapsible, meaning that if nothing is published in a position it will still keep its place in the template?

If this is possible, can I do some module positions and not others?

This is what I would like to accomplish:

I would like to use an image as the background for the entire page and the put content in selected module position, so that the content will blend with the background.

Is this possible.

Thanks

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