Hey @daneruef,
With Pro and an Image element in the Footer Bar, it is possible. I got it working on my test page built using the Content Builder. In the screenshot below, the paragraph text is from the content and the image is in the footer.

Here’s the setup to achieve that.
- Add an Image element to the Bar.

- The key to the Text from the Content overlaying the Image from the Footer is setting the Footer Bar’s Z-index to 0.

- Regarding the Image element, the Retina option should be disabled if you’re not planning on supporting Retina screens. The Top Margin then is set to a negative value.

The described setup might not work for some areas though so you need to tweak the z-index of other areas. For instance, I view a post and the footer covers the Comment Form.

That can be remedied by assigning a z-index of 1 to the content’s container which has the class of x-main
. The CSS goes like this.
.x-main {
z-index: 1;
}
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Since this is method relies on z-index, and this might be the case if you use the builder in general, you might want to opt with using a simple CSS background to prevent complexity. Please show us your exact design so we could advise accordingly.
Please just note that we will not be able to do major coding work as that service is not included as part of our product support. We’ll just see if it can be achieved with simple code we can show you as a guide to help you get started.
Thanks.