trying to find the gap between input field box and filed name

I am trying to find the class/id that is causing the gap between input field box and field name.
Can someone please suggest me how to reduce this gap.
Screenshot:
http://imageshack.us/photo/my-images/717/gapj.png
Here is the url http://www.iacsinfo.org/internship-registration-form/

Example:
Name*
Input box1 Input box2
|||||||||||||||||||||||||||||||||||||||||||||This is the gap i am talking about.
First Last

[css]
.entry-content input {
	margin: 0 0 15px 0;
}

this is class that is inherited from my theme style sheet.