Weird slider shadows

Hi there, I am creating a customer testimonial slider using swiperJS and CMS collections. I have my slider on the page, but I’m getting strange shadows that I don’t know where they’re coming form or how to get rid of them, if any has any ideas that would be fab.

Here is my site Read-Only: (Webflow - Mac Auto Services)

First post so I hope I’ve shared the link properly!