Fix background image stretched on mobile in Zelle

If your background image shows up stretched in Zelle on mobile then please follow these instructions to fix the issue. Go to Appearance -> Customize -> Additional CSS section and add the following code:

@media screen and (max-width: 414px){
body.custom-background{
background-size: contain !important;
background-repeat: repeat !important;
}
}

Save your changes and that's it! Your image should now display better on mobile.