@font-face {
    font-family: 'obelix'; /* название заргужаемого шрифта */
    src:  
      url('font/obelixPro.woff')
}

body 
{
    font-family: 'obelix';
  background: url(bg.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}