@font-face {
  font-family: 'Avenir';
  src: url('Avenir-Black.otf') format('opentype');
  font-weight: 900;
}

@font-face {
  font-family: 'Avenir';
  src: url('Avenir-Book.otf') format('opentype');
  font-weight: 300;
}

@font-face {
  font-family: 'Avenir';
  src: url('Avenir-Roman.otf') format('opentype');
  font-weight: 400;
}