img {
-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-ms-filter: grayscale(100%);
-o-filter: grayscale(100%);
filter: grayscale(100%);
}
Reference: http://tutorialzine.com/2012/06/quick-tip-css-filters/
img {
-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-ms-filter: grayscale(100%);
-o-filter: grayscale(100%);
filter: grayscale(100%);
}
Reference: http://tutorialzine.com/2012/06/quick-tip-css-filters/