How to reference css styles in HTML documents

There are many ways to reference CSS. The following are some common ways:

1. Internal style sheet: Use the tag in the HTML document to define CSS styles. Style sheets defined in this way can only be applied to the current HTML document.

内部样式表 /* 在这里定义CSS样式 */ 这是一个标题 这是一段文本。

2. External style sheet: Define the CSS style in a separate external file, and then use the tag in the of the HTML document to reference it.

Styles defined in external style sheets can be shared by multiple HTML documents, thereby improving code maintainability and reusability. For example:

外部样式表 这是一个标题 这是一段文本。

Among them, the href attribute specifies the path to the external style sheet file. For example, if the style sheet file styles.css is in the same directory as the HTML document, you can write .

3. Inline style: Use the style attribute of the HTML tag to define the CSS style.

内联样式 这是一个标题 这是一段文本。

In actual development, an external style sheet is generally used to define CSS styles in order to achieve code reuse and maintainability. At the same time, it is recommended to follow CSS coding standards and write CSS code that is readable and maintainable.