The comment box script provides an easy way for web designers & developers to put a simple comment box on their web page in order to receive comments from visitors. Property : /* */ CSS Commenting is very simple as any other language. They will not work on other parts of the HTML page. Comments help you and others understand your code and increases code readability. I have looked at the Help Center, but it only says how to do it on the Classic Sites and not the New Sites. You can use the following HTML code to create a comment box within your HTML document.