Button in header open blank page

[NinaRitzi]

Hi Minti,

Thank you for making my favorite theme.
I just made a “button” in the header here:

Hjem

Is there a way to make the button url to open a new blank page?
Like this: https://www.deltager.no/tennismoro
Without leaving the site.

Looking so forward to your reply
– Nina Ritzi

Ticket