![Giannis Konstantinidis](https://uploads.sitepoint.com/wp-content/uploads/2017/09/1505420236giannisk_400x400-96x96.jpg)
Giannis is a freelance front-end web developer, always passionate about free & open-source technologies. He has been part of several communities, including the Fedora Project and Mozilla. You can find out more about him on his website, konstantinidis.me.
Giannis's articles
![Introducing Microsoft’s Fluent Design System](https://uploads.sitepoint.com/wp-content/uploads/2017/09/1505245234Fluent_Design.jpg)
Giannis introduces us to Microsoft's new design language — Fluent Design System — and explains how to implement its design concepts into Windows UWP apps.
![6 Free Material Design CSS Frameworks for 2017 Compared](https://uploads.sitepoint.com/wp-content/uploads/2017/06/1499357425Material-Design-Frameworks.png)
Giannis Konstantinidis lists some great Material Design CSS frameworks and compares them to make it easier for you to choose what best fits your needs.
![An Introduction to OSVR](https://uploads.sitepoint.com/wp-content/uploads/2016/10/1477561764osvrhdk2.jpg)
Giannis Konstantinidis looks at the OSVR platform and headsets, and their promise within the open source movement in virtual reality.