CSS: color wheel spinner animation

.xspin239 {
 width: 100px;
 height: 100px;
 border-radius: 50%;
 background: conic-gradient(transparent, deepskyblue);

 animation: spin 1s linear infinite;
}

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

• CSS: Conic Gradient