网页整体变灰白色(兼容各浏览器)实例

代码如下：

html{ 
filter: grayscale(100%);
-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-ms-filter: grayscale(100%);
-o-filter: grayscale(100%);
filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'>
<filter id=\'grayscale\'>
<feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/>
</filter></svg>#grayscale");  filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); 
-webkit-filter: grayscale(1);
}