Padding/ Aligning help needed

I have 2 questions:

1. How do I remove/ reduce the space in top between the white body of site and the background?

2. How do I move the top navigation a few pixels down close to slider?

URL:http://webworxworld.com/client-demo3/
Screenshot:

 

Hello,

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.top_cornor {
margin-top: 0;
}
.menu_wrapper {
padding-top: 50px;
}

Adjust its value as per your requirements.