Is css cascading important?

CSS cascading is very important. Cascading means that multiple css styles can exist for the same element in an html file. When styles with the same weight exist, it will be determined based on the order of these css styles, and the last css style will be applied.

The operating environment of this article: windows10 system, css 3, thinkpad t480 computer.

I don’t know if you have ever thought about this problem. What if there can be multiple css styles for the same element in the html file and these multiple css styles have the same weight value?

Cascading means that there can be multiple css styles for the same element in the html file. When there are styles with the same weight, it will be determined based on the order of these css styles. The css style at the end is will be applied.

Such as the following code:

<span style="font-size:18px;">
p{
color:red;
}   
p{
color:green;
}  
</span>

Finally, the text in p will be set to green. This cascading is easy to understand. It is understood that the later styles will overwrite the previous styles.

So the previous CSS style priority is not difficult to understand:

Inline style sheet (inside the tag) > Embedded style sheet (in the current file) > External style sheet (external file).

Related video tutorial sharing: js video tutorial

The above is the detailed content of Is css cascading important?. For more information, please follow other related articles on the PHP Chinese website!