<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <title>Spin</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" type="text/css" media="screen" href="style.css" />
  </head>
  <body>
    <div class="circle">
      <div class="dots"></div>
    </div>
  </body>
</html>

body {
  margin: 0;
  padding: 0;
  background: #f1f1f1;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.circle {
  position: relative;
  width: 100px;
  height: 100px;
  border-radius: 50%;
}

.circle:before {
  content: "";
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  bottom: 20px;
  border-radius: 50%;
  box-shadow: 0 0 0 10px #333, 0 0 0 20px #444, 0 0 0 30px #555, 0 0 0 40px #666,
    0 0 0 50px #777, inset 0 0 40px rgba(0, 0, 0, 0.5);
}

.dots {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  bottom: 10px;
  border-radius: 50%;
  animation: animate 10s linear infinite;
}

.dots:before {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  background: #fff;
  border-radius: 50%;
  left: calc(50% - 5px);
  top: 0;
  box-shadow: 50px 0 0 #fff, -65px -50px 0 #fff, -65px 50px 0 #fff,
    -55px 0 0 #f07e6e, 45px 35px 0 #84cdfa, -40px -40px 0 #5ad1cd,
    40px -40px 0 #fff, 55px -59px 0 #fff;
  animation: animate 10s linear infinite;
}

.dots:after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  background: #fff;
  border-radius: 50%;
  left: calc(50% - 5px);
  bottom: 0;
  box-shadow: -50px 0 0 #fff, 65px 50px 0 #fff, 65px -50px 0 #fff,
    55px 0 0 #84cdfa, -45px -35px 0 #f07e6e, 40px 40px 0 #5ad1cd,
    -40px 40px 0 #fff, -55px 59px 0 #fff;
  animation: animate 10s linear infinite;
}

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

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.