Hi, @thinkrandom
It looks like you already resolved those problems , slides works fine on my end
Please, take a look at this workshop Webflow Workshop #134: Creating a multi-column slider in Webflow
Nelson is explaining how to deal with that “gap”
Unfortunately, not
The only way to do it would be style arrow links the way that it would completely cover the area at the each end of the slider (make bigger size and set background color) and ICON inside that links style the way you have those links styled now (round+border)
Let me know if it helped.
Cheers,
Anna