Can anyone tell me why my forum has gone funny? =/

[SpottySocks]

Hiya guys, do you have any idea what has happened to the layout of my themes? I haven't updated the forum recently, and these themes have been on FC for a while now and out of the blue, this has happened. Any ideas why? :)

[Lynne]

What is supposedly wrong with them?

[SpottySocks]

The yellow areas and blocks weren't there before and it just looked really strange. I've updated the templates and it appears to be alright now, sorry Lynne! :)