Google says images styled with CSS won’t be indexed in Image Search, advising developers to use HTML tags for important ...

I added to the end of my line: background-repeat: no-repeat; and also noticed that my layout table is 1029X something so I changed it to 1029X768 and the repeated image is now gone.

You need to remove the image that is currently in your background by clicking on the grey dot in the top left corner. This will remove the image and allow you to add a new one.