Header Banner Image

Hello,

I have a couple of concerns for the top header/navigation area. Please refer to https://www.collabguam.com for site reference.

1. As you can see in the screenshot below, on Google Chrome, there is a white page break in between the navbar and the header image banner. Please advise me how to remove.
https://ibb.co/e5jVjk

2. On mobile, I am also having a problem with the padding as you can see the header title is cut off in the screenshot below. Please advise me how to fix.
https://ibb.co/hzHi4k

Thank you!