How do I make the background be an image?

Twine Version: Harlowe 3.3.8

I want to replace the background with an image, and have the text over it, but I don’t know how. I’ve tried to look it up and stuff, but I don’t understand how to do it, and it doesn’t work. Is it possible?

Hi there!

I think you will find this page useful!
If you want, there are also video tutorials.

There is also this old Forum post.