让彩色网站变为黑白

 1 <style> 
 2     html { 
 3         -webkit-filter: grayscale(100%); 
 4         -moz-filter: grayscale(100%); 
 5         -ms-filter: grayscale(100%); 
 6         -o-filter: grayscale(100%); 
 7         filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);  
 8         _filter:none; 
 9     } 
10 </style>