@-webkit-keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    -webkit-transform: translateY(0);
  }
  40% {
    -webkit-transform: translateY(-30px);
  }
  60% {
    -webkit-transform: translateY(-15px);
  }
}
@-moz-keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    -moz-transform: translateY(0);
  }
  40% {
    -moz-transform: translateY(-30px);
  }
  60% {
    -moz-transform: translateY(-15px);
  }
}
@-o-keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    -o-transform: translateY(0);
  }
  40% {
    -o-transform: translateY(-30px);
  }
  60% {
    -o-transform: translateY(-15px);
  }
}
@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-30px);
  }
  60% {
    transform: translateY(-15px);
  }
}
.bounce {
  -webkit-animation-name: bounce;
  -moz-animation-name: bounce;
  -o-animation-name: bounce;
  animation-name: bounce;
}