@font-face {
    font-family: 'HelveticaNeue Serif';
    src: url('HelveticaNeue Thin.ttf');
    src: local('HelveticaNeue Thin'), local('HelveticaNeue Thin.ttf'),
        url('HelveticaNeue Thin.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
}