You have the CSS being minified, so I have no way of being able to tell you which file has the code you need to change, unless you just change the minified CSS file, which Firebug
will help you find.
The following code, placed in the style.css of the theme, may do what you want:
padding-top: 0px !important;
Keep in mind that this is technically considered custom coding and is not officially covered by support.
I recommend checking out the Codecademy HTML and CSS course
to learn the basics of how HTML and CSS work; it's free, and if you combine that with Firebug
, you should be able to figure a lot of things out on your own, which is generally faster than waiting on support.