I am working on a Thumbnail Slider like here:

https://splidejs.com/tutorials/thumbnail-slider/

on big screens the thumbs are left aligned. I tried to center them.

see https://codepen.io/caplod/pen/ExboPyP

but then the first one gets cut off on small screens.

#thumb .splide__list {
  justify-content: center
}

how can I fix this?