.gray img {
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="" 10=""></feColorMatrix></filter></svg>#grayscale'); /* Firefox 3.5+, IE10 */
filter:gray; /* IE6-9 */
-webkit-filter: grayscale(100%); /* Chrome 19+ & Safari 6+ */
-webkit-transition: all .6s ease; /* Fade to color for Chrome and Safari */
-webkit-backface-visibility: hidden; /* Fix for transition flickering */
}
/* 오버시 컬러로 */
.gray:hover {
filter: none;
-webkit-filter: grayscale(0%);
}
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