Main menu showing problems

I send today an email with some problems and I didn´t receive any answer.
It´s very urgent for us to resolve this problems…we are in a middle of promotion campaign … please, help us.
Thank You very much.

“Hello,
I have a problem: In one of the pages of my website, the main menu opens under the banner.
This is the link: http://dentestet.co.uk/dental-implant-inclusive/
I realy need to resolve this…it´s something urgent.
Thank You very much.”