Retrieving HTML Backgrounds
Find where you have stored your background code and highlight it as indicated in the screenshots below.
NB:Make sure you have highlighted all of the code correctly!
Copy ...(Ctrl+X)
Open a new message box or webpage on the group where you want to display your background.
Click HTML Box at the bottom.
Paste ...(Ctrl+V) into your page.
Untick the HTML Box and your background should show in the message.
Send Message or Save Page