How css uses two classes at the same time

Editor to share with you how css uses two classes at the same time, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Use two classes at the same time

Generally, only one Class can be set for one element, but that doesn't mean you can't use two. In fact, you can do this:

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Give the P element two classes at the same time, separated by a space in the middle, so that the attributes of all the text and side classes will be added to the P element. If there is a conflict between the properties in their two classes, the latter setting works, that is, the properties of the classes placed later in the CSS file.

Add: for an ID, you can't write like this.

You can't write like this.

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