div.loader-container {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  background: transparent;
  z-index: 99999;
}
div.spinner {
  width: 64px;
  height: 64px;
  border: 8px solid;
  border-color: #3d5af1 transparent #3d5af1 transparent;
  border-radius: 50%;
  animation: spin-anim 1.2s linear infinite;
}

@keyframes spin-anim {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}