Easy Guide: Learn How to Comment in CSS Effectively

how to comment in css

If you’re a web developer, then you know how important it is to write clean and organized code. One of the best ways to achieve this is by commenting your code as you write it. Comments can help you and your team understand the code, make changes and updates easily, and avoid unintentional mistakes. In this article, we will teach you how to comment in CSS effectively. You will learn the CSS comment syntax, best practices for commenting, and how to use different types of comments to your advantage. By the end of this guide, you will be able to write clear and concise comments in your CSS code.

Key Takeaways:

  • Commenting is essential for clean and organized CSS code.
  • There are different types of comments in CSS- multiline and single-line comments.
  • Commenting in CSS can greatly improve collaboration and code maintenance.
  • CSS comments should be clear, concise, and follow best practices.
  • By using CSS comments effectively, you can enhance your coding skills and work more efficiently.

Understanding CSS Comment Syntax and Guidelines

When writing CSS code, it is essential to include comments to make your code easier to understand and maintain. Comments in CSS serve as notes that explain the purpose and functionality of different sections of your code. In this section, we will discuss the CSS comment syntax and guidelines to help you write effective comments.

CSS Comment Syntax

The syntax for adding comments in CSS is pretty straightforward. To write a single-line comment, start the line with // followed by your comment. For example:

// This is a single-line comment

To create a multiline comment, start with /* and end with */. Anything written between these two symbols is considered a comment. For example:

/* This is

a multiline

comment */

Remember to include a space after the opening /*, and before the closing */. This makes your code more readable and adheres to the standard CSS commenting format. If you wish to comment out a section of code, you can do so by surrounding it with /* and */.

CSS Comment Guidelines

While there are no hard and fast rules for writing CSS comments, there are some general guidelines that you should follow:

  • Use comments to explain the purpose of your code: This helps other developers understand the reasoning behind the code and how it works.
  • Avoid excessive commenting: Only include comments where necessary to avoid cluttering your code.
  • Keep your comments concise: Be clear and concise while writing comments. Avoid writing long explanations within your comments.
  • Use proper syntax and formatting: Follow the standard CSS commenting format to make your code more readable and understandable for other developers.

Following these guidelines will help you write better comments and improve code readability within your CSS stylesheets.

Types of Comments in CSS

CSS offers two types of comments: multiline comments and single-line comments. Understanding the differences between the two and when to use them can greatly improve the readability and organization of your code.

Multiline Comments in CSS

Multiline comments in CSS are written between /* and */ markers. They can span multiple lines and are often used to describe larger sections of code or to provide an overview of the purpose of a stylesheet. Here’s an example:

/* This is a multiline comment
that explains the purpose of the stylesheet
and lists the colors used throughout */

Similar to single-line comments, multiline comments can also be used to disable or enable specific styles, as shown in the example below:

/* This style is currently disabled
background-color: red; */

Single-Line Comments in CSS

Single-line comments in CSS begin with two forward slashes // and are used to provide brief explanations of individual lines or sections of code. Here’s an example:

/* This is a single-line comment */
body {
background-color: #fff; /* Set the background color to white */

Single-line comments can also be used to disable or enable specific styles, as shown in the example below:

background-color: green; //
background-color: red; //

CSS Code Comments

Comments in CSS are not just used for indicating style changes, but they can also be used to provide additional information about the code itself. For example, if you are using a third-party library or framework, you may want to leave a comment indicating where the code came from or why it was added.

Overall, using comments in your CSS code can greatly improve the readability and organization of your stylesheets. Whether you are using multiline comments to provide a high-level overview of your code, or single-line comments to explain individual lines, take advantage of the different commenting options available to ensure your code is clear, concise, and easy to maintain.

Best Practices for Commenting in CSS Stylesheets

Commenting your CSS code is essential for understanding and maintaining your stylesheets. Follow these best practices to make your comments effective:

  • Use comments to describe the purpose of a style: When writing a new style, explain what it does and how it will affect the layout or design.
  • Organize your comments logically: Use comments to divide your stylesheet into sections. For example, you can group all the styles for a single component together and leave a comment to indicate where that section begins and ends.
  • Comment frequently: Don’t assume that your code is self-explanatory. Add comments whenever you feel that someone else might benefit from an explanation. It’s always better to over-comment than under-comment.
  • Use consistent language: If you use a specific word or phrase to describe a style, stick with it throughout your stylesheet.
  • Avoid commenting the obvious: If a style is self-explanatory, you can skip commenting it. For example, you don’t need to comment color: red; as it’s clear what it does.
  • Be concise: Your comments should be short and to the point. Avoid long explanations or irrelevant anecdotes.

By following these best practices, your CSS code will be easier to read and understand, which can save time and reduce errors when making changes or debugging your code.

CSS Comment Examples

Now that you know the basics of commenting in CSS, let’s take a look at some practical examples to help you understand how to use comments effectively in your stylesheets.

Example 1: Commenting Code Functionality

Comments can be used to explain the functionality of a particular block of code. For instance:

Code Comment

.myclass {
color: red;
margin: 10px;

/* Style for the myclass element */

The above code illustrates how a comment can help you understand the purpose of the CSS rule.

Example 2: Indicating Sections of Code

You can use comments to indicate specific sections of your CSS code, especially when the stylesheet is lengthy and complex:

Code Comment

/* Header section starts here */
header {
background-color: #333;
color: #fff;

/* Main section starts here */
main {
width: 80%;
margin: 0 auto;

Using comments to indicate sections of code can make it easier for you to locate specific styles.

Example 3: Disabling or Enabling Specific Styles

Comments can also be used to disable or enable specific styles:

Code Comment

.myclass {
color: red;
margin: 10px;

.myclass {
color: blue;

By commenting out specific styles, you can easily enable or disable them without having to delete or recreate the entire CSS rule.

Example 4: Leaving Notes for Future Reference

Lastly, comments can be used to leave notes for yourself or other developers who may work with the code in the future:

Code Comment

.myclass {
color: red;
margin: 10px;

.myclass {
color: blue;

/* This color is used for highlighting */

Leaving notes next to specific CSS rules can be helpful for yourself or other developers in the future, especially when working on larger projects.

As you can see, commenting in CSS is crucial for maintaining clean and organized code. Use comments wisely to improve collaboration, readability, and maintainability of your CSS stylesheets.

Wrap Up

Commenting in CSS is a crucial skill for any web developer. By following best practices and understanding the CSS comment syntax, you can greatly improve your code readability, collaboration, and maintainability.

Remember that there are two types of comments in CSS: multiline and single-line comments. Use them wisely to explain code functionality, indicate sections of code, disable or enable specific styles, or leave notes for future reference.

When commenting in your CSS stylesheets, it’s important to structure your comments well and write clear and concise explanations. Use comments to document your CSS code and improve code readability.

By mastering the art of commenting in CSS, you can enhance your development workflow and create more efficient and effective stylesheets. Happy coding!


Q: How do I comment in CSS?

A: To comment in CSS, you can use either multiline comments or single-line comments. Multiline comments are enclosed between /* and */, while single-line comments begin with //.

Q: What are the best practices for commenting in CSS?

A: Some best practices for commenting in CSS include using comments to explain code functionality, indicating sections of code, disabling or enabling specific styles, and leaving notes for future reference. It is important to structure your comments well and write clear and concise explanations to improve code readability and collaboration.

Q: What are the different types of comments in CSS?

A: CSS offers two types of comments: multiline comments and single-line comments. Multiline comments are used for longer explanations or block comments and are enclosed between /* and */. Single-line comments are used for shorter comments and begin with //.

Q: Why is commenting in CSS important?

A: Commenting in CSS is important because it helps improve code maintainability and collaboration. It makes it easier for developers to understand the code, especially when working in teams or revisiting the code in the future.

Q: Can you provide some examples of CSS comments?

A: Sure! Here are a few examples of how CSS comments can be used:

/* This comment explains the purpose of the following code */
/* This section is for styling the header */

// Disable the background color for this specific element
// Uncomment the following line to enable the background color

These examples demonstrate how comments can be used to provide explanations, indicate sections of code, and enable/disable specific styles.

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