<div class="container">
  <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>
    <span style="--i:7;"></span>
  </div>
</div>
<svg>
  <filter id="gooey">
    <feGaussianBlur in="SourceGraphic" stdDeviation="10" />
    <feColorMatrix values="
      1 0 0 0 0
      0 1 0 0 0
      0 0 1 0 0
      0 0 0 20 -10"
    />
  </filter>
</svg>

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Oleo Script Swash Caps', cursive;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(45deg,#006bc6,#1ecafc);
}
.container {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.container h2 {
  position: absolute;
  color: #fff;
  font-size: 1.75em;
  font-weight: 500;
}
.loader {
  position: relative;
  width: 300px;
  height: 300px;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0,0,0,0.25);
  filter: url(#gooey);
}
.loader span {
  position: absolute;
  left: 0px;
  transform-origin: 150px;
  width: 60px;
  height: 60px;
  background: #fff;
  border-radius: 50%;
  animation: animate 5s ease-in-out infinite;
  animation-delay: calc(0.15s * var(--i));
}
@keyframes animate {
  0%,10% {
    width: 100px;
    height: 100px;
    transform: rotate(0deg) translateX(120px);
  }
  40%,70% {
    width: 40px;
    height: 40px;
    transform: rotate(calc(360deg / 8 * var(--i)));
    box-shadow: 0 0 0 10px #fff;
  }
  90%,100% {
    width: 100px;
    height: 100px;
    transform: rotate(0deg) translateX(120px);
  }
}
svg {
    width: 0;
    height: 0;
}