Not compatible with Safari and Chrome?

Hello
I bought hot furniture virtuemart template and I'm trying to personalize it.
The template works well with Firefox and IE but has problem with Safari and Chrome ( www.samtricot.com )
Anybody can help me to understand why?
I'm not expert about joomla and virtuemart so any help will be so much appreciate.

Thank you in advance.

We do not help customers do template customization's on this forum, if not payed additionally for custom job.

When you site renders I see:

#content_wrap_top {
width: 810px;
}

810 is too much so it goes down.