ScrollTop with minus position header function.js

if ($(window).width() > 767) {
      lasPos = 0
      var getHeaderHeight = $('.header-section').outerHeight();
      $(window).scroll(function () {
          var wScroll = $(window).scrollTop();
          $('.header-section').css('top', '-' + getHeaderHeight + 'px')
          if (wScroll > 250) {
              $('.header-section').addClass('is-active').css('top', 0);
              if (lasPos > wScroll) {
                  $('.header-section').css('top', 0);
              } else {
                  $('.header-section').css('top', '-' + getHeaderHeight-5 + 'px');
              }
              lasPos = wScroll
          } else {
              $('.header-section').removeClass('is-active').css('top', '-' + getHeaderHeight + 'px');
          }
      });
  };