.container1 {
  font-size: 21px;
}

.container2 {
  font-size: 51px;
}

.ring {
  display: inline-block;
  position: relative;
  width: 1em;
  height: 1em;
}

.ring div {
  box-sizing: border-box;
  display: block;
  position: absolute;
  width: 1em;
  height: 1em;
  border: 0.12em solid #005c56;
  border-radius: 50%;
  animation: ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  border-color: #005c56 transparent transparent transparent;
}

.ring div:nth-child(1) {
  animation-delay: -0.45s;
}

.ring div:nth-child(2) {
  animation-delay: -0.3s;
}

.ring div:nth-child(3) {
  animation-delay: -0.15s;
}

@keyframes ring {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}