.centered {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
.logo {
  width: 120px;
  margin-bottom: 24px;
}
.loader {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #3498db;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}
@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}