.page_loader {
  margin: 100px auto;
  width: 120px;
  height: 120px;
  border: 16px solid #f3f3f3;
  border-top: 16px solid #00d2a8;
  border-radius: 50%;
  animation: spin 2s linear infinite, heart-beat 2s linear infinite;
  background-color: #fff;
  text-align: center;
  line-height: 120px;
}

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

@keyframes heart-beat {
  55% {
    background-color: #fff;
  }
  60% {
    background-color: #00d2a8;
  }
  65% {
    background-color: #fff;
  }
  70% {
    background-color: #00d2a8;
  }
  100% {
    background-color: #fff;
  }
}