@-webkit-keyframes flap { 0% {-webkit-transform: skew(-12deg);} 50% {-webkit-transform: skew(12deg);} 100% {-webkit-transform: skew(-12deg);} } @-moz-keyframes flap { 0% {-webkit-transform: skew(-12deg);} 50% {-webkit-transform: skew(12deg);} 100% {-webkit-transform: skew(-12deg);} } @-o-keyframes flap { 0% {-webkit-transform: skew(-12deg);} 50% {-webkit-transform: skew(12deg);} 100% {-webkit-transform: skew(-12deg);} } @-ms-keyframes flap { 0% {-webkit-transform: skew(-12deg);} 50% {-webkit-transform: skew(12deg);} 100% {-webkit-transform: skew(-12deg);} } #flapp {margin:1px; border:1px solid transparent; -webkit-transition: all .7s ease-in-out; -moz-transition: all .7s ease-in-out; -o-transition: all .7s ease-in-out; -ms-transition: all .7s ease-in-out;} #flapp:hover {-webkit-animation:flap 2s alternate infinite linear; -moz-animation:flap 2s alternate infinite linear; -o-animation: flap 2s alternate infinite linear; -ms-animation:flap 2s alternate infinite linear; -webkit-transition: all .7s ease-in-out; -moz-transition: all .7s ease-in-out; -o-transition: all .7s ease-in-out; -ms-transition: all .7s ease-in-out;}