<article class="principle nine">
  <div class="shape a"></div>
  <div class="shape b"></div>
</article>

body {
  width: 100vw;
  heigth: 100vh;
  background: #e9b59f;
  overflow: hidden;
}

.nine .shape.a {
  animation: nine 4s infinite cubic-bezier(.93,0,.67,1.21);
  left: calc(50% - 12em);
  transform-origin: 100% 6em;
}
.nine .shape.b {
  animation: nine 2s infinite cubic-bezier(1,-0.97,.23,1.84);
  left: calc(50% + 2em);
  transform-origin: 100% 100%;
}

@keyframes nine {
  0%, 10% {
    transform: translateX(0);
  }
  40%, 60% {
    transform: rotateZ(90deg);
  }
  90%, 100% {
    transform: translateX(0);
  }
}
.principle {
  width: 100%;
  height: 100vh;
  position: relative;
}

.shape {
  background: #2d97db;
  border: 1em solid #fff;
  width: 4em;
  height: 4em;
  position: absolute;
  top: calc(50% - 2em);
  left: calc(50% - 2em);
}