How can I use a background image in my store?

If you’d like to use a custom image as your store’s background, you first need to host the image somewhere. If you have your own server you can use that, otherwise you can use an image hosting service like TinyPic.

Next, head over to the Design > Basics section of your store admin and click the CSS button.

At the very bottom of this code, enter this:

body {
    background-image: url(http://example.com/image.jpg);
}

Be sure to replace http://example.com/image.jpg with the URL of your custom image, and if you really want to get fancy, check out this article about tiling and positioning your background image.