let scroll_animation = function(selectors, type) {
    let body = $("body");
    if (!body.hasClass("wd-scroll-animation-init")) {
       /* $(".s_title, .s_line, .s_button, .e_timeFormat-8, .e_richText-18, [class*='e_text'], .e_websiteShare-31").addClass("wd-scroll-animation");*/
        body.addClass("wd-scroll-animation-init");
        let num = 0;
        $(window).scroll(function() {
            num = 0;
        });

        function ani(a, t) {
            var top = a.offset().top;
            if (top < ($(window).height() + t - 100)) {
                a.addClass("wd-scroll-in");
                setTimeout(function() {
                    a.addClass("wd-scrolled");
                }, 200 + num * 100);
                num++;
            }
        }

        function handle() {
            let t = $(window).scrollTop();
            let body_height = body.height();
            $(".wd-scroll-animation:not(.wd-scroll-in):not(.wd-no-scroll-animation)").each(function() {
                ani($(this), t);
            });
            if ($(window).height + t + 200 >= body_height) {
                $(".wd-scroll-animation:not(.wd-scroll-in):not(.wd-no-scroll-animation)").each(function() {
                    $(this).addClass("wd-scroll-in").addClass("wd-scrolled");
                });
            }
            requestAnimationFrame(handle);
        }
        requestAnimationFrame(handle);
    }
    $(selectors).addClass("wd-scroll-animation").each(function() {
        if (type) {
            $(this).addClass(type)
        }
    });
    return scroll_animation;
};