<div class="blobs">
  <div class="blob">4</div>
  <div class="blob">3</div>
  <div class="blob">2</div>
  <div class="blob">1</div>
</div>

<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
  <defs>
    <filter id="goo">
      <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur" />
      <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="goo" />
      <feBlend in="SourceGraphic" in2="goo" />
    </filter>
  </defs>
</svg>

.blobs {
  filter: url("#goo");
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  }

$dist-x: 65px;
$dist-y: 65px;

@keyframes blob-left-top-anim {
  0% {
    transform: scale(1.1) translate(0, 0);
    }
  33% {
    transform: scale(0.9) translate(-$dist-x, 0);
    }
  62% {
    transform: scale(0.7) translate(-$dist-x, -$dist-y);
    }
  94% {
    transform: scale(1.1) translate(0, 0);
    }
  }

@keyframes blob-right-top-anim {
  0% {
    transform: scale(1.1) translate(0, 0);
    }
  33% {
    transform: scale(0.9) translate($dist-x, 0);
    }
  64% {
    transform: scale(0.7) translate($dist-x, -$dist-y);
    }
  96% {
    transform: scale(1.1) translate(0, 0);
    }
  }

@keyframes blob-left-bottom-anim {
  0% {
    transform: scale(1.1) translate(0, 0);
    }
  33% {
    transform: scale(0.9) translate(-$dist-x, 0);
    }
  66% {
    transform: scale(0.7) translate(-$dist-x, $dist-y);
    }
  98% {
    transform: scale(1.1) translate(0, 0);
    }
  }

@keyframes blob-right-bottom-anim {
  0% {
    transform: scale(1.1) translate(0, 0);
    }
  33% {
    transform: scale(0.9) translate($dist-x, 0);
    }
  68% {
    transform: scale(0.7) translate($dist-x, $dist-y);
    }
  100% {
    transform: scale(1.1) translate(0, 0);
    }
  }

.blob {
  position: absolute;
  background: #e97b7a;
  left: 50%;
  top: 50%;
  width: 100px;
  height: 100px;
  line-height: 100px;
  text-align: center;
  color: white;
  font-size: 40px;
  border-radius: 100%;
  margin-top: -50px;
  margin-left: -50px;
  animation: blob-left-top-anim cubic-bezier(0.77, 0, 0.175, 1) 4s infinite;

  &:nth-child(2) {
    animation-name: blob-right-top-anim;
    }
  
  &:nth-child(3) {
    animation-name: blob-left-bottom-anim;
    }
  
  &:nth-child(4) {
    animation-name: blob-right-bottom-anim;
    }
  
  }