We will start with a basic shiny dashboard that uses no libraries. Then I will show you how we can enhance it using two different approaches based on the most popular UI frameworks: bootstrap and semantic UI. Then I'll show you a pure custom version.

Appsilon Data Science offers R Shiny open source packages that you can use for UI improvements, UI themes, translation, URL routing, and diagnostic display

Routing is the process of using URLs to drive the user interface. Routing adds more possibilities and flexibility while building a complex and advanced web application, offering dividing app into separated sections.