zoom | CSS

zoom CSS descriptor sets the initial zoom factor of a document defined by the @viewport at-rule .

A zoom factor of 1.0 or 100% corresponds to no zooming. Larger values are zoomed in. Smaller values are zoomed out.

句法

/* Keyword value */
zoom: auto;
/* <number> values */
zoom: 0.8;
zoom: 2.0;
/* <percentage> values */
zoom: 150%;

auto: 用户代理 will set the document's initial zoom factor. The user agent may use the size of canvas area on which the document is rendered to determine that factor.
<number>
<percentage>

相关 at-rule	`@viewport`
初始值	`auto`
百分比	the zoom factor itself
计算值	`auto` , or a non-negative number or percentage as specified

auto | <number> | <percentage>

@viewport {
  zoom: 2.0;
}

规范	状态	注释
CSS Device Adaptation The definition of '"zoom" descriptor' in that specification.	工作草案	Initial specification

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
`zoom` descriptor	Chrome 不支持 29 — 84	Edge 完整支持 12 Prefixed 完整支持 12 Prefixed Prefixed Implemented with the vendor prefix: -ms-	Firefox 不支持 No	IE 完整支持 10 Prefixed 完整支持 10 Prefixed Prefixed Implemented with the vendor prefix: -ms-	Opera 完整支持 16	Safari 不支持 No	WebView Android 不支持 4.4 — 37	Chrome Android 不支持 61 — 84	Firefox Android 不支持 No	Opera Android 完整支持 16	Safari iOS 不支持 No	Samsung Internet Android 完整支持 8.0