JSFiddle - React, Tailwind, and code Playground

by paulftw

HTML

<div class=circle>
  <div class=bar id=p>
    <div class=item>1</div>
  </div>
</div>

CSS

.circle {
  height: 300px;
  width: 300px;
  margin: 50px;
  background-color: #fff;
  border: 2px solid #ccc;
  border-radius: 150px;
  
  position: relative;
}

.bar {
  position: absolute;
  top: 135px;
  left: 150px;
  width: 150px;
  // border: 1px dotted #ccc;
  
  transform-origin: 0 15px;
  transform: rotate(-0deg);
  
  transition: all 1s;
}

.bar.top {
  transform: rotate(-90deg);
}
.bar.top .item {
  transform: rotate(90deg);
  width: 50px;
  height: 50px;
  right: -125px;
  border-radius: 25px;
  line-height: 50px;
  font-size: 1.5rem;
}

.item {
  background-color: #aca;
  height: 30px;
  width: 30px;
  border-radius: 15px;
  color: #fff;
  text-align: center;
  line-height: 30px;
  position: relative;
  right: -135px;
  
  transform: rotate(0deg);
  transition: all 1s;
}

JavaScript

setInterval(function() {

	var p = document.getElementById('p');
  p.className = p.className.length > 3 ? "bar" : "bar top";

}, 2000);