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In this article Xiaobian for you to introduce in detail "CSS how to add ID attributes in the element", the content is detailed, the steps are clear, the details are handled properly, I hope this "CSS how to add ID attributes in the element" article can help you solve your doubts, following the editor's ideas slowly in-depth, together to learn new knowledge.

The ID selector is somewhat similar to the class selector, but the difference is significant. First of all, an element cannot have multiple classes like a class attribute, and an element can only have a unique ID attribute. The second ID value can only appear once in an HTML document, that is, an ID can only uniquely identify an element (not a class of elements, but an element). Similar to class attributes, you first add an ID attribute to the element before using the ID selector, for example:

...

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The method of using the ID selector is the pound sign "#" followed by the id value. Now let's use the id selector to select the above two p elements such as:

# top-para {} # foot-para {}

In this way, we can do the necessary operations on the above two paragraphs. It is precisely because of the uniqueness of the ID selector that its use becomes relatively simple.

What is the full name of css? the full name of css is Cascading Style Sheets (cascading style sheets), a computer language used to express file styles such as HTML or XML. CSS can not only modify the web page statically, but also format the elements of the web page dynamically with various scripting languages.

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