To create a comment in your CSS definition, you use "C-style" comments. These should appear outside of a class definition and begin with a /* and end with a */ as shownn below:

You can place the comments after a class defniition on the same line (as shown above) or you can place it on a line by itself either before or after the class definition. Comments cannot be nested (one inside another.) All comments will be ignored by the CSS parser.