data/val/codepen-nqJGpD-eYVVge/full.html

<!DOCTYPE html>
<html>
<head>
  <style>/**
 * Document defaults
 */
body {
  text-align: center;
  background-color: #eee;
}

* {
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}

/* The loader */
.loader {
  position: absolute;
  top: 50%;
  left: 50%;
  overflow: hidden;
  
  width: 200px;
  height: 200px;
  
  margin-top: -100px;
  margin-left: -100px;
  
  perspective: 600px;
  transform-style: perserve-3d;
}

/* The dot */
.dot {
  position: absolute;
  top: 50%;
  left: 50%;
  
  width: 20px;
  height: 20px;
  
  margin-left: -10px;
  margin-top: -10px;
  
  border-radius: 100px;
  
  background-color: #1e3f57;
  
  transform-style: perserve-3d;
  transform: rotateZ(0) translateY(0) scaleX(1);
  
  animation: dot 2200ms cubic-bezier(.39,.24,.63,.74) infinite;
}

.dot:nth-child(2) { animation-name: dot2; }
.dot:nth-child(3) { animation-name: dot3; }
.dot:nth-child(4) { animation-name: dot4; }

@keyframes dot {
  0% {
    transform: rotateZ(0) translateY(0) scaleX(1);
    background-color: #1e3f57;
  }
  30% {
    transform: rotateZ(180deg) translateY(-20px) scaleX(1);
    background-color: #3c617d;
  }
  50% {
    transform: rotateZ(360deg) translateY(-20px) scaleX(1.1);
    background-color: #6bb2cd;
  }
  70% {
    transform: rotateZ(540deg) translateY(-20px) scaleX(1);
    background-color: #3c617d;
  }
  100% {
    transform: rotateZ(720deg) translateY(0) scaleX(1);
    background-color: #1e3f57;
  }
}

@keyframes dot2 {
  0% {
    transform: rotateZ(0deg) translateY(0) scaleX(1);
    background-color: #1e3f57;
  }
  30% {
    transform: rotateZ(180deg) translateY(-20px) scaleX(1);
    background-color: #3c617d;
  }
  50% {
    transform: rotateZ(270deg) translateY(-20px) scaleX(1.1);
    background-color: #6bb2cd;
  }
  70% {
    transform: rotateZ(360deg) translateY(-20px) scaleX(1);
    background-color: #3c617d;
  }
  100% {
    transform: rotateZ(540deg) translateY(0) scaleX(1);
    background-color: #1e3f57;
  }
}

@keyframes dot3 {
  0% {
    transform: rotateZ(-180deg) translateY(0) scaleX(1);
    background-color: #1e3f57;
  }
  30% {
    transform: rotateZ(0deg) translateY(-20px) scaleX(1);
    background-color: #3c617d;
  }
  50% {
    transform: rotateZ(180deg) translateY(-20px) scaleX(1.1);
    background-color: #6bb2cd;
  }
  70% {
    transform: rotateZ(360deg) translateY(-20px) scaleX(1);
    background-color: #3c617d;
  }
  100% {
    transform: rotateZ(540deg) translateY(0) scaleX(1);
    background-color: #1e3f57;
  }
}

@keyframes dot4 {
  0% {
    transform: rotateZ(-180deg) translateY(0) scaleX(1);
    background-color: #1e3f57;
  }
  30% {
    transform: rotateZ(0deg) translateY(-20px) scaleX(1);
    background-color: #3c617d;
  }
  50% {
    transform: rotateZ(90deg) translateY(-20px) scaleX(1.1);
    background-color: #6bb2cd;
  }
  70% {
    transform: rotateZ(180deg) translateY(-20px) scaleX(1);
    background-color: #3c617d;
  }
  100% {
    transform: rotateZ(360deg) translateY(0) scaleX(1);
    background-color: #1e3f57;
  }
}</style>
</head>
<body>
  <div class="loader">
  <div class="dot"></div>
  <div class="dot"></div>
  <div class="dot"></div>
  <div class="dot"></div>
</div>
  <script></script>
</body>
</html>