// use swiper4.5.1 for ie11
let swipeOption = {
  loop: true,
  effect: 'fade',
  autoplay: {
    delay: 4000,
    disableOnInteraction: false,
  },
  speed: 2000,
  pagination: {
    el: '.swiper-pagination',
    clickable: true,
  },
  navigation: {
    nextEl: '.swiper-button-next',
    prevEl: '.swiper-button-prev',
  },
}
new Swiper('.swiper-container', swipeOption);