getting shopify swiper images to show up on mobile

[ym1999]

i implemented a swiper on my banner using swiper js like below:

but the images don't show up on mobile:

can someone please help fix? store is et-tani.com

thanks in advance 

[ym1999]

FYI for anyone wondering / facing a similar issue, clicking 'show container on mobile' in the image banner section on the admin panel seemed to fix it, not sure why or how