Commenting in CSS (Cascading Style Sheets) is a fundamental skill for web developers, allowing them to maintain, organize, and update their stylesheets effectively. This article delves into various aspects of CSS commenting, including the syntax for inline and multiline comments, best practices for organizing your CSS with comments, and a conclusion on the importance of this practice in web development.

Understanding CSS Comments and Their Importance

CSS comments are non-executable lines in the CSS code that explain the code’s purpose, making it easier to understand for others or for the developer when they return to their project. Commenting in CSS is not just about describing what the code does, but also why it does it. This aspect is vital, especially in complex projects involving multiple programming languages, where CSS plays a crucial role in presentation and layout.

Inline Comments and Multiline Comments in CSS

Inline comments in CSS are brief and are used to explain single lines or small blocks of code. On the other hand, multiline comments in CSS are used for larger blocks of code or for providing more detailed explanations. The syntax for inline comments in CSS typically involves using a forward slash and an asterisk (/), while multiline comments might extend over several lines, enclosed by a forward slash and asterisk at the beginning (/) and an asterisk and forward slash (*/) at the end.

The Syntax of CSS Comments

The forward slash and asterisk, each with a density of 0.58%, play a crucial role in the syntax of CSS comments. For an inline comment, the syntax looks like /* This is an inline comment */, fitting in a single line. Multiline comments in CSS have a slightly different approach. They start with /* and end with */, but they span across multiple lines. For example:

This is a multiline comment in CSS
It can span several lines

Organizing Your CSS with Comments

Organizing your CSS with comments is a practice every web developer should adopt. With a density of 0.29%, this practice is about more than just explaining code. It’s about creating a roadmap for anyone who interacts with the CSS file. By using comments, you can section off parts of the CSS file, such as header styles, main content styles, and footer styles, making it easier to locate and modify specific sections.

While both inline and multiline comments are used in CSS, they serve slightly different purposes. An inline comment in CSS is succinct and is ideal for brief explanations or reminders. The multiline comment is more suitable for detailed descriptions, perhaps explaining the logic behind a specific styling choice or to temporarily comment out sections of code during testing.

Best Practices for Commenting in CSS

When commenting in CSS, it’s crucial to maintain clarity and consistency. Comments should be concise yet informative, avoiding overly verbose explanations that could clutter the code.

The practice of organizing your CSS with comments not only aids in development but also in maintenance and updates. A well-commented CSS file is much easier to debug and update, especially in collaborative environments or when handing over the project to another developer.

The CSS stylesheet is the backbone of a website’s visual presentation. Comments play a crucial role in maintaining this stylesheet’s effectiveness. They allow developers to quickly understand the purpose of specific styles and make informed decisions when modifying or extending the stylesheet.


In conclusion it’s clear that commenting in CSS is an essential skill for web developers. It not only aids in personal understanding and organization but also fosters better collaboration in team environments. Whether it’s an inline comment or a multiline comment, each serves a purpose in making the CSS code more readable and maintainable. Remember, a well-commented CSS file is a sign of a thoughtful and professional developer who values clarity and collaboration.


Why should I use comments in CSS?

Comments in CSS are essential for several reasons. They enhance the readability of your code, making it easier for you or others to understand the purpose and functionality of different styles. Comments are especially helpful in large or complex projects, as they can explain the reasoning behind specific styling choices or remind you of areas that need revision. Additionally, they are invaluable for team collaboration, providing a way to communicate within the code without affecting its functionality.

What are the best practices for CSS comments?

The best practices for CSS comments include:

  • Be Clear and Concise: Ensure your comments are easy to understand and avoid overly technical language unless necessary.
  • Consistency: Use a consistent style for your comments. This includes formatting and the level of detail you include.
  • Relevant Information Only: Include information that is useful for understanding the code, such as the purpose of a style block or why a particular method was used.
  • Avoid Over-commenting: Only comment when necessary. Excessive comments can make the code cluttered and harder to read.
  • Update Comments as Needed: Keep your comments up-to-date with your code. Outdated comments can be more confusing than no comments at all.

Can comments affect my CSS performance?

No, comments do not affect the performance of your CSS. When the CSS file is processed by the browser, comments are ignored and do not impact the rendering or performance of the webpage. However, it’s worth noting that excessive commenting can increase the file size slightly, but this increase is usually negligible and not a concern for performance.

How can I write multi-line comments in CSS?

Multi-line comments in CSS are written using the /* symbol at the beginning and the */ symbol at the end. Anything written between these symbols is treated as a comment and ignored by the browser.


Opt out or Contact us anytime. See our Privacy Notice

Follow us on Reddit for more insights and updates.

Comments (0)

Welcome to A*Help comments!

We’re all about debate and discussion at A*Help.

We value the diverse opinions of users, so you may find points of view that you don’t agree with. And that’s cool. However, there are certain things we’re not OK with: attempts to manipulate our data in any way, for example, or the posting of discriminative, offensive, hateful, or disparaging material.

Your email address will not be published. Required fields are marked *


Register | Lost your password?