html{
filter: grayscale(100%);
-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-ms-filter: grayscale(100%);
-o-filter: grayscale(100%);
filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
-webkit-filter: grayscale(1)
}
默哀滤镜,布布扣,bubuko.com
默哀滤镜
原文：http://www.cnblogs.com/ake520/p/3892610.html
