how to use! important to change the order of priorities in CSS-CSS Tutorial-php.cn

Home

Web Front-end

CSS Tutorial

how to use! important to change the order of priorities in CSS

不言

Nov 20, 2018 pm 05:23 PM

The priority of each style sheet is recorded on the previous page. What will happen if multiple values are set for the attributes of the same element in the same style sheet? This article will share with you how to use it! important to change the order of priorities in CSS.

Let’s look at a simple example. First, create the target HTML statement

<!DOCTYPE html>
<html>
<head>
	<title></title>
	<style type="text/css">
strong {
  color: #00ff00;
}
strong {
  color: #ff0000;//red
}
	</style>
</head>
<body>
<p>
啦啦啦啦<strong>php中文网</strong>
哒哒哒哒哒<strong>php</strong>中文网
</p>
</body>
</html>

The effect on the browser is as follows: the color of the text in the strong element is red.

how to use! important to change the order of priorities in CSS

Let’s take a look! Use of important

If you want to change the priority in the code, you need to use !important. The usage method is as follows.

选择器{ 
  property（属性）：value（值） ！Important ; 
  }

When describing a style, if you write !important with a space after the value, the style will be applied first regardless of the normal priority.

Let’s take a look at a specific example. Change the CSS in the above code to the following

<style type="text/css">
strong { 
  color:#00ff00 !important; 
} 

strong { 
  color:#ff0000; 
} 
</style>

The browser will display the following: the font color in the strong element changes becomes green, !important changes the priority of the style.

how to use! important to change the order of priorities in CSS

Let’s take a look at what happens when the style sheets are different! The use of important

The priority of the style sheet is as follows

(high priority)
The style sheet is described in the HTML document
The user style sheet is viewed by the user
Style table Set the default style table of each browser (low priority)

#. style sheet, the style sheet form will take effect.

So what happens if you add "!Important" in the user stylesheet settings? In this case, styles with "!Important" take precedence. Let’s take a closer look.

(High priority)
Yes! Important user's style sheet
is available! important Write style sheets in HTML documents
Style sheets written in HTML documents
User style sheets
Default style sheets Note that
"user style sheet with! important" has a higher priority than "style sheet described by HTML document with! important". Therefore, even if the creator of the HTML document sets the style to "!Important", if a new style value table is set to "!Important" in the user stylesheet, the user stylesheet will take effect.

The above is the detailed content of how to use! important to change the order of priorities in CSS. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Iterating a React Design with Styled ComponentsApr 21, 2025 am 11:29 AM

In a perfect world, our projects would have unlimited resources and time. Our teams would begin coding with well thought out and highly refined UX designs.

Oh, the Many Ways to Make Triangular Breadcrumb Ribbons!Apr 21, 2025 am 11:26 AM

Oh, the Many Ways to Make Triangular Breadcrumb Ribbons

SVG Properties in CSS GuideApr 21, 2025 am 11:21 AM

SVG has its own set of elements, attributes and properties to the extent that inline SVG code can get long and complex. By leveraging CSS and some of the forthcoming features of the SVG 2 specification, we can reduce that code for cleaner markup.

A Few Functional Uses for Intersection Observer to Know When an Element is in ViewApr 21, 2025 am 11:19 AM

You might not know this, but JavaScript has stealthily accumulated quite a number of observers in recent times, and Intersection Observer is a part of that

Revisting prefers-reduced-motionApr 21, 2025 am 11:18 AM

We may not need to throw out all CSS animations. Remember, it’s prefers-reduced-motion, not prefers-no-motion.

How to Get a Progressive Web App into the Google Play StoreApr 21, 2025 am 11:10 AM

PWA (Progressive Web Apps) have been with us for some time now. Yet, each time I try explaining it to clients, the same question pops up: "Will my users be

The Simplest Ways to Handle HTML IncludesApr 21, 2025 am 11:09 AM

It's extremely surprising to me that HTML has never had any way to include other HTML files within it. Nor does there seem to be anything on the horizon that