@font-face {
    font-family: 'helvetica-regular';
    src: url('../fonts/helvetica/helvetica-regular.otf') format('opentype');
    font-weight: normal;
    font-style: normal;
}
@font-face {
    font-family: 'helvetica-bold';
    src: url('../fonts/helvetica/helvetica-bold.otf') format('opentype');
    font-weight: normal;
    font-style: normal;
}
@font-face {
    font-family: 'helvetica-light';
    src: url('../fonts/helvetica/helvetica-light.otf') format('opentype');
    font-weight: normal;
    font-style: normal;
}