crave theme slider mobile deleting the second slider image

[Yasemen]

Hi everyone 

I am trying to change our slider picture to boost up sales. 

I attached the pictures  to this post. Basically on desktop I wanted to use the same image for first second image. So same image is used for sliding. But on mobile I dont want to use the second image. I want it to show only one picture. I dont have any problem with desktop version but for mobile I have the same image underneath another section. It is very confusing. Is there any way to solve this.

Thank you