@font-face {
  font-family: 'Avenir Heavy';
  src: url('avenirltstdheavy.eot');
  src: url('avenirltstdheavy.eot?#iefix') format('embedded-opentype'),
       url('avenirltstdheavy.woff') format('woff'),
       url('avenirltstdheavy.ttf')  format('truetype'),
       url('avenirltstdheavy.svg#avenirltstdheavy') format('svg');
}