Height?
Also it would be better if we could know how the banner(or your website) will displayed be on various devices.

I'm not sure I understand. Please explain.

What is the height of the banner?

As far as I know, to be a responsive design, It must be easily "accessible" in all types of devices, from desktop computer to mobiles. How will be the banner of size ~1900 px will be displayed on small screens. Will it be resized or its dimensions will be changed? Height=weidth

height should be around 1000 px

1000 px