A margin is appearing within the page which is not required in a my own made wordpress theme

A margin is appearing within the page which is not required in a my own
made wordpress theme

I am facing problem with a my own made wordpress theme. a margin is
appearing within the page which is not required. please help. i am in a
hurry. This is the site i am working on. http://wp.balessing.net/
i want this thing. http://unizhost.com/a/mavrickit/
See the margin between the image slider of the SECTIONS WE SERVE and the
RED LINE is very big in my theme. why is this happening. Please HELP. I
have less time to complete the work.
Thaks