Dual Ring Spinner

<div class="dual-ring"></div>

.dual-ring {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(255,255,255,0.1);
  border-top-color: #a78bfa;
  border-right-color: #ec4899;
  border-radius: 50%;
  animation: dr-spin 0.9s linear infinite;
}
@keyframes dr-spin { to { transform: rotate(360deg); } }