This website is an example of the web projects that are taught at CASA. This website is using HTML, CSS, and other frameworks, like Bootstrap. This website is also responsive, which you can use CTRL + to view the changes.
There are many different aspects of making a website. Website hosting is one of those aspects. For example, this website uses
DreamHost as the website host.
Bootstrap, mentioned above, is a framework that allows for easier coding, as most of the code is already written.
This is just a small snippet of the behind the scenes of website development.
I've also created a mobile application prototype, made in Figma. It is called Shutter