Setting a Background Image
Select the site's Background element.
Set Style to Image.
Click Upload or Pick from library
Select an image to use as the background.
(Upload Only) Resize and crop as needed, then click Accept
Set Position to the corner or side of the image that should be prioritized on mobile screens.
(Optional) Adjust Size and other background properties as needed.
(Optional) Choose a color or gradient Overlay to improve the visibility of elements set against the image.
(Optional) Click Done to close the properties panel.
You're done!