將網頁變成黑白

在CSS加入…

html { 
 -webkit-filter: grayscale(100%);
 -moz-filter: grayscale(100%); 
 -ms-filter: grayscale(100%); 
 -o-filter: grayscale(100%); 
 filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); 
 _filter: none; 
}