@font-face {
  font-family: 'Helvetica';
  font-style: normal;
  font-weight: 900;
  src: url('HelveticaNeueCyr-Black.otf');
}

@font-face {
  font-family: 'Helvetica';
  font-style: normal;
  font-weight: 700;
  src: url('HelveticaNeueCyr-Bold.otf');
}


@font-face {
  font-family: 'Helvetica';
  font-style: normal;
  font-weight: 300;
  src: url('HelveticaNeueCyr-Light.otf');
}

@font-face {
  font-family: 'Helvetica';
  font-style: normal;
  font-weight: 500;
  src: url('HelveticaNeueCyr-Medium.otf');
} 

@font-face {
  font-family: 'Helvetica';
  font-style: normal;
  font-weight: 400;
  src: url('HelveticaNeueCyr-Roman.otf');
}