1 <style>
2 html{
3 -webkit-filter: grayscale(100%);
4 -moz-filter: grayscale(100%);
5 -ms-filter: grayscale(100%);
6 -o-filter: grayscale(100%);
7 filter: grayscale(100%);
8 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");
9 filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
10 }
11 </style>
