Font replacement

I found how to do that, I suppose in css

/**  Fonts  **/
@font-face {
    font-family: 'BebasNeueRegular';
    src: url('css/fonts/BebasNeue-webfont.eot');
    src: url('css/fonts/BebasNeue-webfont.eot?#iefix') format('embedded-opentype'),
         url('css/fonts/BebasNeue-webfont.woff') format('woff'),
         url('css/fonts/BebasNeue-webfont.ttf') format('truetype'),
         url('css/fonts/BebasNeue-webfont.svg#BebasNeueRegular') format('svg');
    font-weight: normal;
    font-style: normal;
}

But replacing paths to the font files I can not change actual font on the WP frontpage. Why? I put another font files to the folder css/fonts/ and replace paths in the css file. Then I reload my web page and the font seems to be sans-serif
I understand why do I see sans_serif:

/**  H1-H6  **/
h1, h2, h3, h4, h5, h6, .readmorelink{
	font-family: 'BebasNeueRegular', sans-serif;
	text-transform:uppercase;
	clear:both;
}

But I don’t understand why doesn’t it load any other font?