function activeBreadcrumb(page) {
    $('.breadcrumb-item').removeClass('active').addClass('d-none');
    $('#breadcrumb' + page).addClass('active');

    var index = $('.breadcrumb-item.active').index();

    for (var i = 0; i <= index; ++i) {
        $('.breadcrumb-item').eq(i).removeClass('d-none');
    }
}