#target-div {
  width: 100vw;
  height: 100vh;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
}

.loader {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: #fff;
  box-shadow: 32px 0 #fff, -32px 0 #fff;

  animation: flash-light-blue 0.5s ease-out infinite alternate;
}

@keyframes flash-light-blue {
  0% {
    background-color: #FF114640;
    box-shadow: 32px 0 #FF114640, -32px 0 #FF1146;
  }
  50% {
    background-color: #FF1146;
    box-shadow: 32px 0 #FF114640, -32px 0 #FF114640;
  }
  100% {
    background-color: #FF114640;
    box-shadow: 32px 0 #FF1146, -32px 0 #FF114640;
  }
}