CSS Tutorial

CSS Introduction
CSS Syntax
CSS Selectors
How to Add CSS
CSS Comments

CSS Comments

Make Your Code Understandable, Maintainable, and Professional

CSS comments are essential tools for writing clean, organized, and easy-to-maintain code. They allow developers to add notes, clarify styling decisions, and enhance collaboration—without affecting how the webpage looks or functions.

Why Use CSS Comments?

CSS comments serve multiple purposes, such as:

  • Explaining why specific styles were applied
  • Temporarily disabling a portion of code for testing or debugging
  • Providing guidance or context for teammates
  • Structuring long style sheets for better readability
  • Labeling different sections (e.g., Header, Footer, Navigation)

CSS Comment Syntax

CSS comments start with /* and end with */. Any text placed between these markers is ignored by the browser during rendering.

Example: Single-Line Comment

/* This is a single-line comment */
p {
  color: red;
}

Example: Inline Comment

p {
  color: red; /* Set the text color to red */
}

Using Comments to Temporarily Disable Code

You can comment out a portion of a CSS rule to prevent it from being applied:

p {
  /* color: red; */
  color: blue;
}

In this case, the paragraph text will appear in blue, because the red color has been disabled using a comment.

Multi-Line Comments

When you need to leave a longer note or document multiple lines, use multi-line comments:

/* 
  This section controls the styling 
  for paragraph text across the website.
  Make sure it aligns with the overall theme.
*/
p {
  font-size: 16px;
  color: #333;
}

CSS vs. HTML Comments

It’s important to remember that HTML and CSS use different commenting syntaxes:

  • CSS comments: /* comment */
  • HTML comments: <!-- comment -->

Example: HTML and CSS Comments in One Page

<!DOCTYPE html>
<html>
<head>
  <style>
    p {
      color: green; /* Styled via CSS */
    }
  </style>
</head>
<body>

  <h1>Welcome to HQLEduTech</h1>

  <!-- Paragraphs below are styled using CSS -->
  <p>This text appears green.</p>
  <p>Learning CSS is simple and powerful.</p>

</body>
</html>

Best Practices for Writing CSS Comments

  • Comment large sections of code to indicate their purpose (e.g., layout, typography, buttons)
  • Use comments to outline responsive breakpoints and browser-specific fixes
  • Avoid excessive comments for self-explanatory properties
  • Use clear, concise language to describe the reason behind a styling choice
  • Keep comment formatting consistent throughout the file

Summary Table

FeatureDetails
Syntax/* comment */
PurposeExplain styles, organize code, disable rules temporarily
Effect on OutputNone — not visible in the browser
CompatibilityWorks in all modern web browsers
Best Use CaseStructuring CSS and improving collaboration

Learn More with HQLEduTech

Understanding how and when to use CSS comments is an important step toward writing professional-quality code. At HQLEduTech, we guide learners through essential web development skills, equipping them with industry best practices to build real-world projects with confidence.

Start writing clean, maintainable CSS code today—your future self (and team) will thank you.

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