Adding background image to Space

[DB]

I have seen multiple places where people have found a way to use a large background image that takes up the entire header section of a confluence page.  I dont want just a banner across the top. Im looking for something that will allow to me to customize a space that looks like what I have uploaded.   I have read a few places where this functionality isnt an option with the Cloud based platform but there is a lot of conflicted info ONLINE that says this can be done through a user defined macro.  Any experts out there with any advice on how to achieve this look without adding extra plugins from outside companie?

[Mikael Sandberg]

Hi DB,

Without an app you can only add a header image to your pages like this:

Anything else require an app like Scroll Viewport, Refined, or any of the other Theme apps that you can find in the Marketplace.

[Nic Brough -Adaptavist-]

The stuff you've found about macros is correct, you can create user macros that can do this.

But Cloud does not support user macros.