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);
}