<div class="blobs">
  <div class="blob"></div>
  <div class="blob"></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;
}

@keyframes blob-left-top-anim {
  0% {
    transform: scale(1.1) translate(0, 0);
  }
  30% {
    transform: scale(0.9) translate(-65px, 0);
  }
  60% {
    transform: scale(0.9) translate(-65px, 0);
  }
  94% {
    transform: scale(1.1) translate(0, 0);
  }
}
@keyframes blob-right-top-anim {
  0% {
    transform: scale(1.1) translate(0, 0);
  }
  30% {
    transform: scale(0.9) translate(65px, 0);
  }
  60% {
    transform: scale(0.9) translate(65px, 0);
  }
  96% {
    transform: scale(1.1) translate(0, 0);
  }
}
.blob {
  position: absolute;
  background-image: linear-gradient(0deg, #34e0f0 0%, #b400ff 100%);
  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;
}
.blob:nth-child(2) {
  animation-name: blob-right-top-anim;
}
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External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. //cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js