.circle{
    display: inline-block;
    width: 15px;
    height: 15px;
    background-color: #173268;
    border-radius: 50%;
    animation: loading 1.5s cubic-bezier(.8, .5, .2, 1.4) infinite;
    transform-origin: bottom center;
    position: relative;
  }
  @keyframes loading{
    0%{
      transform: translateY(0px);
      background-color: #173268;
    }
    50%{
      transform: translateY(50px);
      background-color: #4161a1;
    }
    100%{
      transform: translateY(0px);
      background-color: #7398e0;
    }
  }
  .circle-1{
    animation-delay: 0.1s;
  }
  .circle-2{
    animation-delay: 0.2s;
  }
  .circle-3{
    animation-delay: 0.3s;
  }
  .circle-4{
    animation-delay: 0.4s;
  }
  .circle-5{
    animation-delay: 0.5s;
  }
  .circle-6{
    animation-delay: 0.6s;
  }
  .circle-7{
    animation-delay: 0.7s;
  }
  .circle-8{
    animation-delay: 0.8s;
  }