Hello sam,
can you explain with more detail step by step? You have background image in your local machine or already upload to appery.io server?
Alternative 1 (after upload image to appery.io server):
A- In your page add classname myPageWithBackground
B- Create cssFile with the following code
.myPageWithBackground {
background: url("../image/yourImageFileName.png") no-repeat;
background-size: 100%;
}
Alternative 2 (after upload image to appery.io server):
Try to custom html with Panel Widget and in the src for the background image set the path: "files/views/assets/image/yourImageFileName.png"
Regards