CSS Loading Animation Generator

<!-- HTML -->
<div class="loader"></div>

/* CSS */
.loader {
  width: 48px;
  height: 48px;
  border: 6px solid #6366f133;
  border-top: 6px solid #6366f1;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}