Carousel: add box-shadow border
All other elements on the Explore page have a slight box-shadow border along the lines of box-shadow: inset 0 0 0 1px alpha(black, 0.13);
, but the carousel currently doesn't. For consistency it'd be good to add a similar border there too, but I can't figure out where to apply it. I tried adding it to the individual pages but that doesn't work because then the borders move with pages, and to the entire carousel but that means it goes around the paging dots.
Ideally the border should be on the rounded clipping container, and be static as you swipe between pages.
cc @aplazas