@font-face {
    font-family: 'CustomSans';
    font-style: normal;
    font-weight: normal;
    src: local('Helvetica'),
         local('Dengxian'),
         local('Microsoft YaHei'),
         local('Noto Sans SC'),
         local('Sans-serif')
         local('Arial'),
         url('../fonts/NotoSansSC-Regular.ttf');
}