starting_point/frontend/components/message.css

@keyframes bounce {
  0%,
  80%,
  100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

.dot {
  width: 5px;
  height: 5px;
  margin: 0 5px;
  border-radius: 50%;
  display: inline-block;
  animation: bounce 1.4s infinite ease-in-out both;
  background-color: white;
}

.dot:nth-child(1) {
  animation-delay: -0.32s;
}

.dot:nth-child(2) {
  animation-delay: -0.16s;
}