@-webkit-keyframes bound {
  0% {
    transform: scale(.92);
    box-shadow: 0 3px 6px -1px #888;
    background: #c00;
  }
  100% {
    transform:scale(1.02);
    box-shadow: 0 8px 13px -4px #888;
    background: #e60000
  }
}
@-moz-keyframes bound {
  0% {
    transform: scale(.92);
    box-shadow: 0 3px 6px -1px #888;
    background: #c00;
  }
  100% {
    transform:scale(1.02);
    box-shadow: 0 8px 13px -4px #888;
    background: #e60000
  }
}
@-o-keyframes bound {
  0% {
    transform: scale(.92);
    box-shadow: 0 3px 6px -1px #888;
    background: #c00;
  }
  100% {
    transform:scale(1.02);
    box-shadow: 0 8px 13px -4px #888;
    background: #e60000
  }
}
@keyframes bound {
  0% {
    transform: scale(.92);
    box-shadow: 0 3px 6px -1px #888;
    background: #c00;
  }
  100% {
    transform:scale(1.02);
    box-shadow: 0 8px 13px -4px #888;
    background: #e60000
  }
}

.bound-animate {
  animation: bound .5s ease-in infinite alternate;
}