Thank you for your answer!
No, I didn’t use the localization add on - is it necessary when only dealing with one translation? The costumers would mainly be from Denmark. I would like to minimize the cost of the site 
The problem is, that I don’t get how to change the link (and picture/flag) according to the active page. When you mention the link-wrapped-image, do you mean putting an image inside a link block? When I tried this, the links didn’t seem to work in action (it just linked to webflow.com/…).