const swiperSlides = document.getElementsByClassName('swiper-slide');
s6.on('slideChange', function() {
const otherSlides = swiperSlides
for (let index = 0; index < swiperSlides.length; index++) {
const element = swiperSlides[index];
element.getElementsByTagName('a')[0].style.display = 'none'
}
const linkElemCurrentSlide = swiperSlides[s6.realIndex].getElementsByTagName('a')
linkElemCurrentSlide[0].style.display = 'block'
});