/* form submit */
    $(".js-form-submit").submit(function() {
        var th = $(this);
        $.ajax({
            type: "POST",
            url: "mail/mail.php",
            data: th.serialize()
        }).done(function() {
            var successCallback = th.closest('.form_wrapper').find('.success_callback');
            successCallback.fadeIn(0).css({'transform':'scale(1)'});
            setTimeout(function() {
                th.trigger("reset");
                successCallback.fadeOut().css({'transform':'scale(0)'});
                $.magnificPopup.close();
            }, 1900);
        });
        return false;
    });