Summary
Comments are used to add explanatory notes or prevent the browser from interpreting parts of the stylesheet.
Syntax
/* Comment */
Examples
/* A single line comment */ /* A comment which stretches over several lines */
Notes
The /* */ comment syntax is used for both single and multi line comments. There is no other way to specify comments in external stylesheets. However, when using the <style> element, you may use <!-- --> to hide CSS from older browsers, although this is not recommended. As in most programming languages that use the /* */ comment syntax, comments cannot be nested. In other words, the first instance of */ that follows an instance of /* closes the comment.