html{
-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-ms-filter: grayscale(100%);
-o-filter: grayscale(100%);
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/'></fecolormatrix></filter></svg>#grayscale");
filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
}