CSS comments are used to add explanatory notes, remarks, or descriptions in your CSS code. These comments are ignored by browsers and do not affect how the CSS code works. They are useful for:

1. Documenting your code: Explaining what a section of code does.
2. Organizing your code: Making it easier to read and maintain.
3. Temporarily disabling code: Commenting out CSS while debugging or testing.

Syntax for CSS Comments:

/* This is a CSS comment */

• Comments are enclosed between /* and */.
• They can span a single line or multiple lines.

Example:

/* This styles the body of the page */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

/* Header section styles */
header {
    background-color: #f4f4f4;
    padding: 20px;
    text-align: center;
}

/* Footer section styles
   Spans multiple lines */
footer {
    background-color: #333;
    color: white;
    padding: 10px;
    text-align: center;
}

/* Temporarily disable the following style */
/* 
h1 {
    color: red;
}
*/

Key Points:

1. Single-Line Comments:
   You can write a quick description on one line: /* Single-line comment */
2. Multi-Line Comments:
   Useful for longer explanations: /* This is a multi-line comment. It is ignored by the browser. */
3. Commenting Out Code:
   Temporarily disable parts of your CSS while testing: /* p { color: blue; } */

Why Use Comments?

1. Better Collaboration: Helps teams understand the purpose of specific styles.
2. Easier Debugging: Quickly identify and disable problematic code.
3. Code Organization: Break your CSS into sections with headers or notes.

Important Note:

CSS comments cannot be nested. For example, the following will cause errors:

/* Outer comment
   /* Inner comment */
*/

Use CSS comments effectively to make your stylesheets clean and manageable!