How do you add left and right background?

[bluidkiti]

My forum is fixed and I would like to add a left and right gradient background and have it repeat on each side so it shows all the way down on the page. How would I do this?

Thanks in advance for your help.

[Whiteyez]

My forum is fixed and I would like to add a left and right gradient background and have it repeat on each side so it shows all the way down on the page. How would I do this?

Thanks in advance for your help.

background: url(your img url) repeat-x;