Comments are a description of the code. It is used to make the code understandable to users.
The comment is written in the code, but the browser does not process it.
In different programming languages, comments are displayed in different ways.
In the html code, the comment is written like this:
<!--Text or code-->
In comments you can write anything, it will not affect the document and will not appear on the page
Рекомендую: Шаблоны HTML на русском