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img:hover{-webkit-filter: grayscale(0%); -webkit-transition: .5s ease-in-out;-moz-filter: grayscale(0%); -moz-transition: .5s ease-in-out;-o-filter: grayscale(0%); -o-transition: .5s ease-in-out;} img{-webkit-filter: grayscale(100%); -webkit-transition: .5s ease-in-out;-moz-filter: grayscale(100%); -moz-transition: .5s ease-in-out-o-filter: grayscale(100%); -o-transition: .5s ease-in-out;}
