站长我们也随大流 把网站变灰 祈祷下倍

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);
}