JSFiddle - React, Tailwind, and code Playground

HTML

<div class="spinner"></div>

CSS

.spinner {
  margin: 0;
  height: 22px;
  width: 22px;
  animation: rotateSpinner 0.8s infinite linear;
  border: 2px solid black;
  border-right-color: transparent;
  border-radius: 50%;
}

@keyframes rotateSpinner {
  0%    { transform: rotate(0deg); }
  100%  { transform: rotate(360deg); }
}