How can I adjust my slideshow to cover the entire desktop screen?

[Riverview]

Hey guys, I'd like to change my slideshow on my store to cover the entire screen for desktop, it's working fine on mobile but on desktop the images only cover about half the screen and I'm left with big white sections on the sides. The height is fine it's just the width I'm having trouble with, if anyone could help me out that would be greatly appreciated. Thank you!