@-webkit-keyframes travel {
  from { left: 0;     }
  to   { left: 640px; }
}@-webkit-keyframes bounce {
  from, to  {
    bottom: 0;
    -webkit-animation-timing-function: ease-out;
  }
  50% {
    bottom: 220px;
    -webkit-animation-timing-function: ease-in;
  }
}@-webkit-keyframes spin {
  from {                                     }
  to   { -webkit-transform: rotateZ(360deg); }
}@keyframes travel {
  from { left: 0;     }
  to   { left: 640px; }
}@keyframes bounce {
  from, to  {
    bottom: 0;
    animation-timing-function: ease-out;
  }
  50% {
    bottom: 220px;
    animation-timing-function: ease-in;
  }
}@keyframes spin {
  from {
    -moz-transform: rotate(0);
    -o-transform: rotate(0);
    -ms-transform: rotate(0);
    transform: rotate(0);
  }
  to {
    -moz-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}#stage{position:relative;margin:1em auto;width:660px;height:240px;border:2px solid #666;background:#cff}#traveler{position:absolute;width:20px;height:240px;-webkit-animation-name:travel;-webkit-animation-timing-function:linear;-webkit-animation-iteration-count:infinite;-webkit-animation-direction:alternate;-webkit-animation-duration:4.8s;animation-name:travel;animation-timing-function:linear;animation-iteration-count:infinite;animation-direction:alternate;animation-duration:4.8s}#bouncer{position:absolute;width:20px;height:20px;border-radius:10px;background:red;background:-webkit-radial-gradient(60% 40%,circle,rgba(255,255,255,.8),red 50%) red;background:-moz-radial-gradient(60% 40%,circle,rgba(255,255,255,.8),red 50%) red;background:-o-radial-gradient(60% 40%,circle,rgba(255,255,255,.8),red 50%) red;background:-ms-radial-gradient(60% 40%,circle,rgba(255,255,255,.8),red 50%) red;background:radial-gradient(60% 40%,circle,rgba(255,255,255,.8),red 50%) red;-webkit-animation-name:bounce , spin;-webkit-animation-iteration-count:infinite;-webkit-animation-duration:4.2s;animation-name:bounce , spin;animation-iteration-count:infinite;animation-duration:4.2s}