.bounce{-webkit-animation-name:bounce;-webkit-animation-iteration-count:infinite;-webkit-animation-duration:4s;animation-name:bounce;animation-iteration-count:infinite;animation-duration:4s} @-webkit-keyframes bounce{from,to { bottom:0; -webkit-animation-timing-function:ease-out}50%{ bottom:5%; -webkit-animation-timing-function:ease-in} } @keyframes bounce{from,to { botttom:0; animation-timing-function:ease-out}50%{ bottom:5%; animation-timing-function:ease-in}