CSS Comments

Commenting on Individual Properties or Values

To comment on individual properties in CSS, use a double forward slash (//) above the property. This type of comment is not compiled into the resulting CSS, making it ideal for internal notes or reminders. For example:‍


// This is a comment on a property
color: red;

To comment on individual values, use the traditional CSS comment syntax with /* */. This type of comment is included in the resulting CSS and can provide additional information about specific values. For example:

font-size: 16px; /* This value sets the font size to 16 pixels */


Differences Between SCSS and Indented Syntax

In SCSS, both // and /* */ comments are supported. However, in the indented syntax, only /* */ comments are allowed. Proper commenting improves the readability and maintainability of your Sass codebase, helping others understand your code's purpose.

Benefits of Using Comments in CSS Code

Using comments in CSS code has several benefits:

1. Explanatory Notes: Comments help explain the purpose of certain styles, making it easier for others to understand the code.
2. Tracking Styles: Comments help keep track of different styles and rules, which is useful in large projects with multiple developers.
3. Debugging and Testing: Comments can temporarily disable lines of code, aiding in debugging and testing different styles.
4. Collaboration: Comments make it easier for multiple developers to work on the same project, improving teamwork and code comprehension.

Definition of CSS Comments

CSS comments are lines of text ignored by the browser. They provide additional information without affecting the functionality of the CSS code. Comments are enclosed with /* at the start and */ at the end. For example:

/* This is a comment */


Types of CSS Comments

Single-Line Comments

Single-line comments start with // and are used for brief comments or to disable specific styles. However, this method is not widely supported across all browsers. The preferred method in CSS is to use /* ... */. For example:‍


/* This comment describes a specific style */
.className {
  color: red; /* Disabled this style for now */
}

Multi-Line Comments

Multi-line comments span across multiple lines and are enclosed within /* and */. They are used for longer explanations or temporarily disabling a block of code. For example:‍


/* This comment provides information about the purpose of the code block below.
It can span multiple lines and improve code readability and organization. */
.className {
  /* Disabled this style for now 
  color: red;  
  background-color: blue;  */
  font-size: 16px;
}

Best Practices for Adding Comments in CSS Code

1. Use Clear and Concise Comments: Provide brief descriptions relevant to the code they pertain to.
2. Be Consistent: Maintain a consistent commenting style throughout the CSS file.
3. Comment Sections: Separate different sections of your CSS file with comments.
4. Comment Individual Selectors and Complex Code: Explain the purpose of specific selectors or complex code blocks.
5. Remove Unnecessary Comments: Regularly review and remove outdated or redundant comments.

Why Comments Are Important

Comments enhance readability and organization in a stylesheet. They provide a roadmap that helps developers understand the structure and purpose of the code, facilitating collaboration and maintenance. Proper commenting practices save time and effort when locating specific styles or sections in the CSS file.

Commenting on Sections of Code

To comment on sections of code in CSS, use the /* and */ tags. This method can temporarily disable a section of code without deleting it. For example:‍


/* This is a comment on a section of code.
.className {
  color: red;
  background-color: blue;
} */

To re-enable the code, simply remove the comment tags. This approach is helpful for testing or debugging specific parts of the CSS.