CSS media query properties: @media and min-device-width/max-device-width

CSS media query attributes: @media and min-device-width/max-device-width, specific code examples are required

In modern web development, we often The style and layout of web pages need to be adjusted according to the device used by the user. To achieve this, CSS provides media query properties, including @media rules and min-device-width/max-device-width properties. This article explains these two properties in detail and provides some concrete code examples.

1. @media rules
   @media rules allow different CSS styles to be applied based on different media types or specific media characteristics. By using @media rules, we can dynamically adjust the style of the web page based on the device's width, height, screen orientation, resolution and other conditions.

The basic syntax of @media rules is as follows:

@media mediatype and|not|only (media feature) {
    CSS styles;
}

Among them, mediatype specifies the media type, such as screen (screen), print (print), speech (voice prompt) etc.; and, not and only are used for combinations of conditions; media feature represents media characteristics, such as width, height, orientation, etc.

The following is an example, when the width of the web page is less than 600 pixels, set the background color of the web page to red:

@media (max-width: 600px) {
    body {
        background-color: red;
    }
}

2. min-device-width/max-device-width attribute
   The min-device-width and max-device-width attributes are one of the media attributes in the @media rule and are used to apply different CSS styles based on the actual width of the device.

min-device-width specifies the minimum width of the device. When the device width is greater than or equal to the specified value, the CSS styles in the @media rule are applied.

max-device-width specifies the maximum width of the device. When the device width is less than or equal to the specified value, the CSS styles in the @media rule are applied.

Here is an example of setting the web page text color to blue when the device width is between 400 pixels and 800 pixels:

@media (min-device-width: 400px) and (max-device-width: 800px) {
    body {
        color: blue;
    }
}

By using the @media rule and min-device- With the width/max-device-width attribute, we can optimize the display effect of the web page according to the width of the user's device and provide a better user experience.

Summary:
CSS media query properties: @media and min-device-width/max-device-width play an important role in modern web development. By using these properties, we can adjust the style and layout of web pages based on the media type and characteristics of the device. In specific practice, we need to understand the syntax of @media rules and the usage of media attributes, and flexibly use these attributes to achieve responsive design of web pages.

(Note: The above code examples are only to illustrate the principle, please make specific adjustments and optimizations according to actual needs.)

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