Header problem

Hello,

Excellent theme! I’m trying to set it up right now. I’m having some trouble converting the header space to a hole header image.

I’ve used this css code provided in this forum:
#site-title {
margin:0;
line-height:0;
float:left;
}

And I’ve already the image, but I got some space on top and bottom of the image (look it up here: http://www.papsonline.org/forum2013/). Also, the social media logos appear strange.

Anyone can solve these issues? Thank you!