This is the plainest form of an HTML page. It has no colour, no graphics, no functionality and, no style.
However, it is what's called Proof of Concept. It means I've successfully put up a page and included some HTML tages on text. This is what you need to do on your commercial space. We'll be hand-coding for a bit, so no editors please.
You have to be able to work with tags at the source level and read what's going on before you can work with editors.