比率 | <ratio>
<ratio>CSS数据类型，用于描述媒体查询的纵横比，表示两个无单位值之间的比例。
语法
比率由的组成为：严格的正数 <integer>，以及后面斜杠 ('/', Unicode U+002F SOLIDUS)，和后面第二个严格的正数 <integer>
斜杠前后的空格是可选的。第一个数字代表宽度，第二个数字表示高度。
实例
? | Ratio | Usage |
|---|---|---|
? | 4/3 | Traditional TV format in the 20th century. |
? | 16/9 | Modern "widescreen" TV format. |
? | 185/100 = 91/50 (non-integer dividends and divisors are not allowed) | The most common movie format since the 1960s. |
? | 239/100 (non-integer dividends and divisors are not allowed) | "Widescreen", anamorphic movie format. |
规范
Specification | Status | Comment |
|---|---|---|
Media QueriesThe definition of '<ratio>' in that specification. | Recommendation | Initial definition. |
浏览器兼容性
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
Basic support | (Yes) | 3.5 (1.9.1) | 9 | 9.5 | (Yes) |
Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | ? | (Yes) | (Yes) |
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