You do not set margins to 0 for a blockquote. That's just wrong. Also setting margins to 0 for hall the header styles is plain wrong too.
Code:
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, p, pre, code, blockquote {
font-family: "Gentium Plus";
margin:0;
padding:0;
border-width:0;
}
This style set is just a mess.