Change font

Hi! I want to change a font in MineFun theme but I have a problem. Here is a code:

a.post_ttl, .post-caption h1 {
color:#083f0a;
font-size:24px;
font-family: '8bitoperator';
src: url('www.denniksialenehonerda.jecool.net/8bitoperator.ttf')
text-transform:uppercase;
}


But it doesnt work. Wheres problem?:(

Hi!
Please, read the following instructions:
http://www.w3schools.com/cssref/css3_pr_font-face_rule.asp
and
http://www.w3schools.com/css/css_font.asp
These webpages are very useful for you if you want to customize font settings.