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This article mainly explains "how to express the CSS ID selector". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn how to express the CSS ID selector.

1. The id selector is identified by "#", followed by the id name

2. The id name is the id attribute value of the HTML element.

3. The id value of an element is unique and can only correspond to a specific element in the document.

Thank you for your reading, the above is the content of "how to express the CSS ID selector", after the study of this article, I believe you have a deeper understanding of how to express the CSS ID selector, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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