CSS Loader Generator

<div class="loader"></div>

.loader {
  width: 48px;
  height: 48px;
  border: 4px solid #7c3aed33;
  border-bottom-color: #7c3aed;
  border-radius: 50%;
  display: inline-block;
  animation: loader-rotation 1s linear infinite;
}

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