Dawn Theme- Resizing image banner to fit full screen just like it does on the laptop

[Abdiqani]

I am trying to make the image banner on home website to fit full screen when customers visit the site. Here is how it looks when customers visit the site. Please Help. I want to be able to cover full page where I highlighted in blue. Thank You in advance.

[premadestores]

Please check this option .. then it will be responsive and fit to screen

[Abdiqani]

Hey thank you for replying but solution seemed to not be working I tried it before.