用户变焦 | @viewport.user-zoom (Device Adaptation) - CSS 中文开发手册
user-zoom CSS描述符控制用户是否能够改变由@viewport所定义的文档的缩放因子。
/* Keyword values */ user-zoom: zoom; user-zoom: fixed;
| Related at-rule | @viewport |
|---|---|
| 初始值 | zoom |
| 百分比值 | refer to the size of bounding box |
| 适用媒体 | visual, continuous |
| 计算值 | as specified |
| 正规顺序 | the unique non-ambiguous order defined by the formal grammar |
语法
值
zoom用户可以放大或缩小。
fixed用户无法放大或缩小。
正式语法
zoom | fixed
规范
| Specification | Status | Comment |
|---|---|---|
| CSS Device AdaptationThe definition of ‘"user-zoom" descriptor‘ in that specification. | Working Draft | Initial definition |
浏览器兼容性
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | ? | ? | ? | ? | ? |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | ? | ? | ? | ? | ? | ? |
用户变焦 | @viewport.user-zoom (Device Adaptation) - CSS 中文开发手册 - Break易站