In 2015 Microsoft released the Office UI Fabric, which allows developers to create web applications and SharePoint / Office add-ins that look and feel like Office. Microsoft was / is using this internally as well, they open-sourced it so the community could benefit from it. Essentially, the Office UI Fabric is a set of CSS style sheets.
In this blog post I am going to show you how you can leverage ngOfficeUIFabric in a Windows 10 Universal App! Windows 10 apps are available in 2 options: XAML based and HTML based. The latter allows us to build our app like a website, and deploy as a native app!