No worries 👍

Realistically, I think your best option would be to scale the banner relative to the viewport height based on different breakpoints and then testing that on different device viewport sizes.

You could use something like 15vh height and then use background-position: center top and background-size: cover. Or you could even use vw to set the height but this would require some experimentation to get it just right for sure.

Hope that helps a little!

ps. If it becomes a pain, can always put together a demo of something and share a link 😊