-moz-device-pixel-ratio

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范例
规范
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非标
此特征是非标准的，且不在标准轨道中。不要在面向 Web 的生产站点中使用它：它不适用于每个用户。实现之间可能存在大的不兼容性，且行为将来可能改变。

弃用
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the 兼容性表格 at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

-moz-device-pixel-ratio Gecko-only CSS media feature can be used to apply styles based on the number of device pixels per CSS pixel.

Do not use this feature. 使用 resolution feature with the dppx unit instead.

注意 : This media feature is also implemented by Webkit and by IE 11 for Windows Phone 8.1 as


-webkit-device-pixel-ratio

. The min and max prefixes as implemented by Gecko are named


min--moz-device-pixel-ratio

and


max--moz-device-pixel-ratio

; but the same prefixes as implemented by Webkit are named


-webkit-min-device-pixel-ratio

and


-webkit-max-device-pixel-ratio

句法

<number>

Media: media/visual
Accepts min/max prefixes: yes

范例

Basic compatibility example

-moz-device-pixel-ratio may be used for compatibility with Firefox older than 16, and alongside -webkit-device-pixel-ratio for compatibility with WebKit-based browsers that do not support dppx .

范例：

@media (-webkit-min-device-pixel-ratio: 2), /* Webkit-based browsers */
       (min--moz-device-pixel-ratio: 2),    /* Older Firefox browsers (prior to Firefox 16) */
       (min-resolution: 2dppx),             /* The standard way */
       (min-resolution: 192dpi)             /* dppx fallback */

注意 : See this CSSWG article for compatibility good practices regarding resolution and dppx .

规范

Not part of any standard.

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`-moz-device-pixel-ratio` media feature 弃用非标	Chrome 不支持 No	Edge 不支持 No	Firefox 完整支持 4	IE 不支持 No	Opera 不支持 No	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 不支持 No	Firefox Android 完整支持 4	Opera Android 不支持 No	Safari iOS 不支持 No	Samsung Internet Android 不支持 No

图例

完整支持
不支持
非标。预期跨浏览器支持较差。
弃用。不要用于新网站。

元数据

最后修改： Aug 2, 2020

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句法

范例

Basic compatibility example

规范

浏览器兼容性

图例

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