JSFiddle - React, Tailwind, and code Playground

HTML

<div class='overlay'>
  <div class='spinner center'>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
    <div class='spinner-blade'></div>
  </div>
</div>

CSS

.overlay {
  background: rgba(100, 100, 100, 0.5);
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
  width: 8em;
  height: 8em;
  border-radius: 0.3em;
}

.spinner {
  font-size: 50px;
  position: relative;
  display: inline-block;
  width: 1em;
  height: 1em;
}
.spinner.center {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
}
.spinner .spinner-blade {
  position: absolute;
  left: 0.4629em;
  bottom: 0;
  width: 0.074em;
  height: 0.3777em;
  border-radius: 0.5em;
  background-color: transparent;
  -webkit-transform-origin: center -0.2222em;
      -ms-transform-origin: center -0.2222em;
          transform-origin: center -0.2222em;
  -webkit-animation: spinner-fade 1s infinite linear;
          animation: spinner-fade 1s infinite linear;
}
.spinner .spinner-blade:nth-child(1) {
  -webkit-animation-delay: 0s;
          animation-delay: 0s;
  -webkit-transform: rotate(0deg);
      -ms-transform: rotate(0deg);
          transform: rotate(0deg);
}
.spinner .spinner-blade:nth-child(2) {
  -webkit-animation-delay: 0.083s;
          animation-delay: 0.083s;
  -webkit-transform: rotate(30deg);
      -ms-transform: rotate(30deg);
          transform: rotate(30deg);
}
.spinner .spinner-blade:nth-child(3) {
  -webkit-animation-delay: 0.166s;
          animation-delay: 0.166s;
  -webkit-transform: rotate(60deg);
      -ms-transform: rotate(60deg);
          transform: rotate(60deg);
}
.spinner .spinner-blade:nth-child(4) {
  -webkit-animation-delay: 0.249s;
          animation-delay: 0.249s;
  -webkit-transform: rotate(90deg);
      -ms-transform: rotate(90deg);
          transform: rotate(90deg);
}
.spinner .spinner-blade:nth-child(5) {
  -webkit-animation-delay: 0.332s;
          animation-delay: 0.332s;
  -webkit-transform: rotate(120deg);
      -ms-transform: rotate(120deg);
          transform: rotate(120deg);
}
.spinner .spinner-blade:nth-child(6) {
  -webkit-animation-delay: 0.415s;
         ...