Php BB2 Theme Appearance Problem

Hi
I hope someone can help me to get through this problem. I installed the same skin and theme for my 3 forums: http://www.vieclamthuctap.com, http://raovat3d.forumvi.com, and http://diendanseopanda.forumvi.com
The skin and theme had worked very well at the beginning of these site started up, however, the last couple of days, one of my sites (http://diendanseopanda.forumvi.com) has a problem with the theme and skin. I check 2 other sites to see if the problem happens at 3 sites because i use the same theme and skin, but they are working properly, there is no problem with the theme and skin, only one forum of mine(http://diendanseopanda.forumvi.com) has a problem in appearance ( the structure of the site is disordered, really hard for the users to see)
I highly appreciate your help.
Thanks in advance.

Hi, Everything is fine now. Topic solved.