/*  黑白 html { 
filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); 
-webkit-filter: grayscale(1); 
}*/
html {
filter: grayscale(100%); -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -ms-filter: grayscale(100%); -o-filter: grayscale(100%); filter: url(desaturate.svg#grayscale); filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1); -webkit-filter: grayscale(1); 
FILTER: gray ;
}