Step 1: Click on the "style" icon to bring up the page options.
Step 2: Under the "Background" panel, here is where you can either add or select an image to be placed as a background.
Step 3: To add a new image, click on "Select".
Step 4: You can either choose an image from your library,
Step 5: upload a new image,
Step 6: or search for an image from the web.
Step 7: After selecting an image, click on confirm.
Step 7: You'll now see that your background has been set to your chosen image.