Header Slider Background not responsive on mobile view

Hello, My header-slider Background images does not go responsive when viewing it on mobile: How do i Make my Slider Background images responsive?
The site is http://issan.org.ng

Many Thanks

Hello Dhannychaoo,

Please check this topic:

Please let me know if you need more help.

Kind Regards, Roman.

Hello Roman,

Thank you for your help, however i still can’t figur it out. here is the screen shot https://cloudup.com/ce8t3B-YTyE

Is there any Css Code that can solved this?

Kind Regards,

Okay Dhannychaoo,

Please check this solution:

Kind Regards, Roman.