Of course I did my own website. It is not something frozen, it evolves constantly as my web skills increase.
In its first version, the site used a design a friend did for me. The design has changed progressively to offer a better user experience : it is now easier to read and it adapts to the screen width.
The code has also be improved several times, reflecting my new skills in web development.
I have developed my own PHP framework that I also use on other websites.
Server-side, it is written in PHP/MySQL and client-size it is HTML/CSS/Javascript.
The main libraries I use are jQuery and Bootstrap.
On the site I did everything, the texts translation as well as the online store.