League news and Opera

Faced with the problem of columns display in Opera on my website. Pushing F11 (full screen) to temporarily correct the situation. The problem appears not always, sometimes it takes several open pages.
http://orsha.biz/news/it-news/3378-видеокарты-asus-geforce-gtx-660-directcu-ii-top-и-gtx-650-directcu-top.html

On the official website also have the problem display League news in Opera.
http://demo.gavick.com/joomla25/leaguenews/

incorrect display