Semantic-UI is probably the only Modern UI that does not offer Responsive Navigation Bar. I created the NPM package: dna-responsive-nav to fix this limitation. If you are using Semantic-UI-React, then you may give it a try.
In this article, I show you how I implemented the tags function using remote data. The frontend is done by the Semantic UI Dropdown component and the backend is implemented using FeathersJS with Mongodb.