html{
	filter: grayscale(90%);
	-webkit-filter: grayscale(90%);
	-moz-filter: grayscale(90%);
	-ms-filter: grayscale(90%);
	-o-filter: grayscale(90%);
	filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=0.9);
	-webkit-filter: grayscale(0.9);

}