.lds-ring {
  display: inline-block;
  position: relative;
  width: 100%;
  height: 100%;

  div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;

    border: 3px solid #9c9c9c;
    border-radius: 50%;
    animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-color: #9c9c9c transparent transparent transparent;
  }

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

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

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

@keyframes lds-ring {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}
