Moving sidebar down a little?

I found this theme that I like and I love it but the sidebar is a little too high and it bothers me. I want to move it down a little (probably 15px) but I have limited knowledge in code.

Can anyone help? Heres the code:

/* Sidebar */

#sidebar { float: right; top:50px; width: 293px; margin-bottom: 30px; }

.side_box { margin-bottom: 8px; padding-top: 8px; border-top: 1px solid #ccc; }

.side_box h3.side_title { margin-top: 0; font-weight: normal; font-size: 16px; margin-bottom: 10px; }

.side_box ul { list-style-type: none; margin: 0px; padding: 0; }

.side_box ul li { margin-bottom: 8px; }

Thank You