How to build a open source home automation system with a Raspberry pi

At the time we are talking now, the industry follows the wave and put IOT "Internet of things" objects everywhere. I'm talking about your connected fridges, televisions, radios, cat feeders, etc. But if you are maker like me, you want to make your own DIY project to control whatever you want in your house or somewhere else. This is what this tutorial is for.

A maker built an home automation system with a Raspberry pi and a HTML & CSS page ''interface to control the Raspberry pi over the internet. The raspberry is considered as the client and the HTML & CSS pages as the server.