full screen application without windows bars

I want to run an app on my PC that I'm going to connect it to the TV. The app should run in full screen. In the app you can view photos, watch videos, listen to audio files and read articles.

If I'm going to build it as a web application, I can run the browser in full screen. When you then start moving your mouse on the top of the screen, you will get to see the address bar, I don't like that. The app can only be closed with a button that I make, and when you are moving the mouse you don't see any windows (setting) bar.

What techniques and solutions can I use for this.

I can work well with C #, HTML5, Javascript / angular, ASP.Net etc ..