Change size of header image on mobile version brooklyn theme

[Emelie]

Hey hey! 
I am really annoyed over one thing on my webbshop.... I want the header image to cover more than it does now on the mobile version since it does not look good when the navigation bar covers half of the header picture... The desktop version is good but it looks like the image is cut shorter on the mobile version. How do I change the image size margins/size on mobile version to make the image go further down (see screenshot). I have gotten really good help in here before so I cross my fingers that someone knows how to solve this as well! 🙂 

URL: racketbollen.se
Password: dobewrr

 

[Emelie]

Thank you so so much! now the navigation bar is visible on all pages. 

[KetanKumar]

@Emelie 

its my pleasure to help us