you can insert an image in place of the background color?

Thank you
Rik

Hello !
Maybe I was wrong to write, I mean my website!

This test page:

http://devprova.corsidiballoonline.com/offerta-tango-argentino/

I would like to display it no full size but only 80%, is this possible ?
Only one page , no all web site.

Sorry for my english…

Thanks