.bouncing {
  text-align: center;
  margin-top: 20px;
  border-radius: 50%;
  animation: bounce 1s infinite alternate;
  -webkit-animation: bounce 1s infinite alternate;
}
@keyframes bounce {
  from {
    transform: translateY(0px);
  }
  to {
    transform: translateY(-15px);
  }
}
@-webkit-keyframes bounce {
  from {
    transform: translateY(0px);
  }
  to {
    transform: translateY(-15px);
  }
}