CSS - 全站变灰
CSS 代码
html {
filter: grayscale(100%);/*IE浏览器*/
-webkit-filter: grayscale(100%);/*谷歌浏览器*/
-moz-filter: grayscale(100%);/*火狐*/
-ms-filter: grayscale(100%);/*IE*/
-o-filter: grayscale(100%);/*opera*/
filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);/*兼容*/
-webkit-filter: grayscale(1);/*谷歌浏览器*/
}