@font-face {
    font-family: 'Avenir';
    src: url('Avenir-Medium.ttf') format('truetype');
  }
  
  @font-face {
    font-family: 'AvenirLTStd-Black';
    src: url('AvenirLTStd-Black.otf') format('opentype');
  }
  
  @font-face {
    font-family: 'AvenirLTStd-Book';
    src: url('AvenirLTStd-Book.otf') format('opentype');
  }
  
  @font-face {
    font-family: 'AvenirLTStd-Light';
    src: url('AvenirLTStd-Light.otf') format('opentype');
  }
  
  @font-face {
    font-family: 'AvenirLTStd-Roman';
    src: url('AvenirLTStd-Roman.otf') format('opentype');
  }