Скрытие меню после скролла в адаптивной верстке

$(document).ready(function(){ 
    var contentSection = $('.section'); 
    var navigation = $('.nav-wrap'); 
    var headerNav = $('.nav'); 
    var clientBlock = $('.client-item-wrap'); 
 
 
    navigation.on('click', 'a', function(event){ 
        event.preventDefault(); 
        smoothScroll($(this.hash)); 
    }); 
    headerNav.on('click', 'a', function(event){ 
        event.preventDefault(); 
        smoothScroll($(this.hash)); 
    }); 
    clientBlock.on('click', 'a', function(event){ 
        event.preventDefault(); 
        smoothScroll($(this.hash)); 
    }); 
 
 
    $(window).on('scroll', function(){ 
        updateNavigation(); 
    }); 
 
    updateNavigation(); 
 
    function updateNavigation(){ 
        contentSection.each(function(){ 
            var sectionName = $(this).attr('id'); 
            var navigationMatch = $('.nav-wrap a[href="#' + sectionName + '"]'); 
            if( ($(this).offset().top - $(window).height()/2 < $(window).scrollTop()) && 
                ($(this).offset().top + $(this).outerHeight() - $(window).height()/2 > $(window).scrollTop())) 
            { 
                navigationMatch.addClass('active-section'); 
            } 
            else { 
                navigationMatch.removeClass('active-section'); 
            } 
        }); 
    } 
    function smoothScroll(target){ 
        $('body,html').animate({ 
            scrollTop: target.offset().top - 50 
        }, 500); 
    } 
});