.lds-ripple {
  display: inline-block;
  position: relative;
  width: 80px;
  height: 80px;
  top: 45%;
}
.lds-ripple div {
  position: absolute;
  border: 4px solid #fff;
  opacity: 1;
  border-radius: 50%;
  animation: lds-ripple 1s cubic-bezier(0, 0.2, 0.8, 1) infinite;
}
.lds-ripple div:nth-child(2) {
  animation-delay: -0.5s;
}
@keyframes lds-ripple {
  0% {
    top: 65px;
    left: 70px;
    width: 0;
    height: 0;
    opacity: 1;
  }
  100% {
    top: 0px;
    left: 0px;
    width: 142px;
    height: 142px;
    opacity: 0;
  }
}

.overlay {
  z-index: 99999;
  position: fixed;
  display: none;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  background-color: rgba(45, 102, 235, 0.8);
  text-align: center;
}