/* https://loading.io/css/ */
.lds-ring {
  display: inline-block;
  position: relative;
  width: 30px;
  height: 30px;
}
.lds-ring div {
  box-sizing: border-box;
  display: block;
  position: absolute;
  width: 20px;
  height: 20px;
  margin: 8px;
  border: 4px solid #00a1dd;
  border-radius: 50%;
  animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  border-color: #00a1dd transparent transparent transparent;
}
.lds-ring-hidden div {
  border-color: transparent transparent transparent transparent;
}
.lds-ring div:nth-child(1) {
  animation-delay: -0.45s;
}
.lds-ring div:nth-child(2) {
  animation-delay: -0.3s;
}
.lds-ring div:nth-child(3) {
  animation-delay: -0.15s;
}
@keyframes lds-ring {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.5s;
}
.fade-enter,
.fade-leave-to {
  opacity: 0;
}