Hi Cindy-
Thanks for reaching out. By default, Crio doesn’t include image backgrounds for the footer but you’re right that you can use Custom CSS to accomplish it.
There are two rules that you should use, one to add the background, and one to remove any backgrounds from the default components of the footer. This code should work with the image you have up there:
#colophon .bgtfw-footer { background-image: url("https://sunbreakresumes.dreamhosters.com/wp-content/uploads/2021/08/Footer-Background.jpg");}
[id^="footer"] {background: unset !important; }