Website layout

Hi guys,

I’m new to WordPress, I will greatly appreciate any help. So I did not make any changes to the menu bar but for some reason you can see it all messed up now from any devices and from any browsers. It’s funny cause I called hostgator and they can see it right. So what do I do? It’s seems like it’s a wordpress error of some sort.
I apologize for my English, I’m Italian. I hope I’ve been clear.
Thank you so much