宽度 | @media.width
@media.width
可以使用width CSS @media媒体特性来应用基于viewport宽度(或页面框，用于分页媒体)的样式。
语法
该width特征被指定为<length>表示视口宽度的值。这是一个范围功能，也就是说，您也可以使用前缀min-width和max-width变量分别查询最小值和最大值。
例子
HTML
<div>Watch this element as you resize your viewport's width.</div>
CSS
/* Exact width */
@media (width: 360px) {
div {
color: red;
}
}
/* Minimum width */
@media (min-width: 35rem) {
div {
background: yellow;
}
}
/* Maximum width */
@media (max-width: 50rem) {
div {
border: 2px solid blue;
}
}
结果
规范
| Specification | Status | Comment |
|---|---|---|
| Media Queries Level 4The definition of 'width' in that specification. | Working Draft | The value can now be negative, in which case it computes to false. |
| Media QueriesThe definition of 'width' in that specification. | Recommendation | Initial definition. The value must be nonnegative. |
浏览器兼容性
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 9.0 | (Yes) | (Yes) |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | ? | ? | ? | ? | ? |
