Putting a Christmas background to the white part of the foru

[iGuest 3]

Hello, Happy holidays to all.
I was trying to put a Christmas theme background to only the white part of the phpbb forum. Could someone please help me to do this.

This is the part I would like to have the Christmas theme back ground to.
edited to move image


This is the background theme I would like to add for X-mas..only in the white part. Thanks again for any help.
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[iGuest 3]

There is no one here Who can tell me about this ????????????......

[iGuest 3]

are you talking about the background image, like not in the text windows, but the actual background of a phbb page? if that is the case, find the main file that shows the full forum, and instead of bgcolor I think the attribute would be background. so say the pic is called christmas.jpg it would be like <background="christmas.jpg"> I'm not sure if that is the correct attribute, you can try https://www.wired.com/ but it is a simple html thing. been a long time since I used background pictures, it often times does not look professional, but that is my opinion.