.loader {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 500vh;
  }
  
  .loader > span {
    display: inline-block;
    background-color: #33ccff;
    width: 0px;
    height: 0px;
    border-radius: 50%;
    margin: 0 8px;
    transform: translate3d(0);
    animation: bounce 0.6s infinite alternate;
  }
  
  .loader > span:nth-child(2) {
    background-color: #ff99cc;
    animation-delay: 0.2s;
  }
  
  .loader > span:nth-child(3) {
    animation-delay: 0.4s;
  }
  
  @keyframes bounce {
    to {
      width: 16px;
      height: 16px;
      transform: translate3d(0, -16px, 0);
    }
  }