reduce space between header and content – BUDDYMATIC theme

hi!
I’ve been trying to reduce the space between header (logo) and content – as you can see here http://lananguyen.com/wordpress/ . I’ve read many topics concerning this problem, unfortunately any solution doesn’t work.

I opened style.css and other .css files on my computer and changed some margins, but I didn’t help.

Please, heeelp me 🙂
As I wrote in the topic my theme is BUDDYMATIC
and the style.css looks like this:

blabla

#header h1 a{
font-family: Courier

}

#header h2{
font-family: Courier;
}

.entry-content img {
margin: 0 0 0px 0;
max-width:100%;
}

.alignleft,
img.alignleft {
float: left;
margin-right:20px;
}
.alignright,
img.alignright {
display: block;
float: right;
margin-left:20px;
}
.aligncenter,
img.aligncenter {
margin-left:auto;
margin-right:auto;
display: block;
clear: both;
}
.wp-caption {
text-align: center;
margin-bottom:18px;
}
.wp-caption img {
margin: 0;
padding: 0;
border: 0 none;
}
.wp-caption p.wp-caption-text {
margin: 0;
padding:5px;
}
.gallery img {
margin:0;
}
.wp-smiley { /* Prevent the smileys from breaking line-height */
max-height:12px;
margin:0 !important;
}