<div class="loader">
	<span style="--i:0;"></span>
	<span style="--i:1;"></span>
	<span style="--i:2;"></span>
	<span style="--i:3;"></span>
	<span style="--i:4;"></span>
	<span style="--i:5;"></span>
	<span style="--i:6;"></span>
</div>

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #eaeef0;
}

.loader {
  position: relative;
  display: flex;
}

.loader span {
  position: relative;
  width: 50px;
  height: 50px;
  background: #eaeef0;
  margin: 0 10px;
  border: 6px solid #eaeef0;
  border-radius: 50%;
  box-shadow: -8px -8px 15px rgba(255, 255, 255, 1),
    8px 8px 15px rgba(0, 0, 0, 0.2), inset 3px 3px 5px rgba(0, 0, 0, 0.1),
    inset -1px -1px 5px rgba(255, 255, 255, 1);
}

.loader span::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #5c89ff;
  border-radius: 50%;
  box-shadow: inset 3px 3px 5px rgba(0, 0, 0, 0.1),
    inset -1px -1px 5px rgba(255, 255, 255, 1);
  transform: scale(0);
  animation: animate 3.5s linear infinite, animateColor 5s linear infinite;
  animation-delay: calc(var(--i) * 0.2s);
}

@keyframes animate {
  0%,
  9.99%,
  70.0001% {
    transform: scale(0);
  }
  10%,
  70% {
    transform: scale(1);
  }
}

@keyframes animateColor {
  0% {
    filter: hue-rotate(0deg);
  }
  100% {
    filter: hue-rotate(360deg);
  }
}