.boot-shell {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100dvh;
  font-family: Arial, sans-serif;
}

.boot-inner {
  text-align: center;
}

.boot-spinner-wrap {
  margin-top: 20px;
}

.boot-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid #3498db;
  border-radius: 50%;
  animation: boot-spin 1s linear infinite;
}

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