The comment for the css file is

Comments of CSS files

Comments are a very common language element in programming. It is used in the code to record the developer's thoughts, comments and explanations about the code. Comments can also be used in CSS files to record some special content or to help us better understand the code file.

CSS comments start with "/" and end with "/", with some comments in between. The content of comments is ignored by the compiler and will not affect the appearance, layout and behavior of the style sheet. However, for developers, especially when multiple people develop the same code base together, comments are very necessary. The following will introduce the purpose and use of some comments in CSS files.

Purpose

1. Explanation of style information

Comments can help developers understand the style information written by the code author, allowing them to quickly understand the intent and structure of the code . This is especially important for large code bases. Annotations can provide more context, facilitate team collaboration and reduce communication costs.

2. Record modification history

Comments can also record the historical version of modifications to a certain element or a certain attribute value in the style sheet, which will help us better Manage the code base and track the details of modifications. Such comments can allow future developers to understand the history and changes of the code more quickly, helping with performance optimization and code refactoring.

3. Attribute Description

Comments can also record the specific description of a certain attribute, which can help developers better understand the role and scope of application of this attribute, which is helpful To improve the readability of styles.

Usage

1. Single-line comments

Single-line comments start with "//". Such comments only take effect on the current line and will not affect the current line. The following lines of code have an impact.

.selector {
    color: red; /* 红色字体*/
}

2. Multi-line comments

Multi-line comments are comments that start with "/" and end with "/". It can span Multiple lines, but usually used at the head of the entire style code as file description information and copyright regulations.

/* ========================================
   公司名称：XXX科技有限公司
   版权声明：版权所有，未经授权禁止使用本代码
   创建日期：2019-01-01
   作者：XXX
   最后修改：2019-01-02
   描述：这是一个示例CSS样式表文件，仅作学习使用
   ======================================== */
   
   .selector {
   color: red;
   }

3. Nested comments

CSS nested style comments are also possible, just add an exclamation point "!" and a space before the comment.

.selector {
   color: red;
   /* 选择器嵌套 */
   ! .selector2 {
      font-size: 18px;
   }
}

Summary

As an essential language element in CSS files, CSS comments are of great significance for code readability, code collaboration and maintenance. Through the introduction of this article, we hope that everyone can better understand the role and usage of CSS comments, thereby improving the maintainability and readability of the code, reducing development costs, and improving development efficiency.

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