/* root span holding the waves */
.btd-blink{
  display:inline-block;
}
.btd-blink .dot{
  display:inline-block;
  animation:cdb-wave 0.9s cubic-bezier(.25,.46,.45,.94) infinite;
}
.btd-blink .dot:nth-child(2){
  animation-delay:.15s;
}
.btd-blink .dot:nth-child(3){
  animation-delay:.3s;
}
@keyframes cdb-wave{
  0%,60%,100%{ transform:translateY(0);}
  30%{ transform:translateY(-4px);}
}