.c-b:hover { filter: grayscale(100%); -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -ms-filter: grayscale(100%); -o-filter: grayscale(100%); }
.b-c { filter: grayscale(100%); -webkit-filter: grayscale(100%); -moz-filter: grayscale(100%); -ms-filter: grayscale(100%); -o-filter: grayscale(100%); } .b-c:hover { filter: grayscale(0%); -webkit-filter: grayscale(0%); -moz-filter: grayscale(0%); -ms-filter: grayscale(0%); -o-filter: grayscale(0%); }