body {
    overflow: hidden;
  }

  .holder {
    width: 100%;
    height: 400px;
    position: relative;
  }

  .holder .circle {
    border-radius: 100% 100% 0 0;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    transform-origin: bottom center;
  }

  .holder .circle:nth-child(1) {
    background: black;
    border-bottom: none;
    border-radius: 25px 25px 0 0;
    width: 25px;
    height: 12.5px;
    z-index: 15;
    -webkit-animation: circle-1 10s infinite ease-in-out;
    animation: circle-1 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-1 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-360deg);
    }
  }

  @keyframes circle-1 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-360deg);
    }
  }

  .holder .circle:nth-child(2) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 31px 31px 0 0;
    width: 31px;
    height: 15.5px;
    z-index: 14;
    -webkit-animation: circle-2 10s infinite ease-in-out;
    animation: circle-2 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-2 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-720deg);
    }
  }

  @keyframes circle-2 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-720deg);
    }
  }

  .holder .circle:nth-child(3) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 62px 62px 0 0;
    width: 62px;
    height: 31px;
    z-index: 13;
    -webkit-animation: circle-3 10s infinite ease-in-out;
    animation: circle-3 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-3 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-1080deg);
    }
  }

  @keyframes circle-3 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-1080deg);
    }
  }

  .holder .circle:nth-child(4) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 93px 93px 0 0;
    width: 93px;
    height: 46.5px;
    z-index: 12;
    -webkit-animation: circle-4 10s infinite ease-in-out;
    animation: circle-4 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-4 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-1440deg);
    }
  }

  @keyframes circle-4 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-1440deg);
    }
  }

  .holder .circle:nth-child(5) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 124px 124px 0 0;
    width: 124px;
    height: 62px;
    z-index: 11;
    -webkit-animation: circle-5 10s infinite ease-in-out;
    animation: circle-5 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-5 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-1800deg);
    }
  }

  @keyframes circle-5 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-1800deg);
    }
  }

  .holder .circle:nth-child(6) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 155px 155px 0 0;
    width: 155px;
    height: 77.5px;
    z-index: 10;
    -webkit-animation: circle-6 10s infinite ease-in-out;
    animation: circle-6 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-6 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-2160deg);
    }
  }

  @keyframes circle-6 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-2160deg);
    }
  }

  .holder .circle:nth-child(7) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 186px 186px 0 0;
    width: 186px;
    height: 93px;
    z-index: 9;
    -webkit-animation: circle-7 10s infinite ease-in-out;
    animation: circle-7 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-7 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-2520deg);
    }
  }

  @keyframes circle-7 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-2520deg);
    }
  }

  .holder .circle:nth-child(8) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 217px 217px 0 0;
    width: 217px;
    height: 108.5px;
    z-index: 8;
    -webkit-animation: circle-8 10s infinite ease-in-out;
    animation: circle-8 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-8 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-2880deg);
    }
  }

  @keyframes circle-8 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-2880deg);
    }
  }

  .holder .circle:nth-child(9) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 248px 248px 0 0;
    width: 248px;
    height: 124px;
    z-index: 7;
    -webkit-animation: circle-9 10s infinite ease-in-out;
    animation: circle-9 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-9 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-3240deg);
    }
  }

  @keyframes circle-9 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-3240deg);
    }
  }

  .holder .circle:nth-child(10) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 279px 279px 0 0;
    width: 279px;
    height: 139.5px;
    z-index: 6;
    -webkit-animation: circle-10 10s infinite ease-in-out;
    animation: circle-10 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-10 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-3600deg);
    }
  }

  @keyframes circle-10 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-3600deg);
    }
  }

  .holder .circle:nth-child(11) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 310px 310px 0 0;
    width: 310px;
    height: 155px;
    z-index: 5;
    -webkit-animation: circle-11 10s infinite ease-in-out;
    animation: circle-11 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-11 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-3960deg);
    }
  }

  @keyframes circle-11 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-3960deg);
    }
  }

  .holder .circle:nth-child(12) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 341px 341px 0 0;
    width: 341px;
    height: 170.5px;
    z-index: 4;
    -webkit-animation: circle-12 10s infinite ease-in-out;
    animation: circle-12 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-12 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-4320deg);
    }
  }

  @keyframes circle-12 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-4320deg);
    }
  }

  .holder .circle:nth-child(13) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 372px 372px 0 0;
    width: 372px;
    height: 186px;
    z-index: 3;
    -webkit-animation: circle-13 10s infinite ease-in-out;
    animation: circle-13 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-13 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-4680deg);
    }
  }

  @keyframes circle-13 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-4680deg);
    }
  }

  .holder .circle:nth-child(14) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 403px 403px 0 0;
    width: 403px;
    height: 201.5px;
    z-index: 2;
    -webkit-animation: circle-14 10s infinite ease-in-out;
    animation: circle-14 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-14 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-5040deg);
    }
  }

  @keyframes circle-14 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-5040deg);
    }
  }

  .holder .circle:nth-child(15) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 434px 434px 0 0;
    width: 434px;
    height: 217px;
    z-index: 1;
    -webkit-animation: circle-15 10s infinite ease-in-out;
    animation: circle-15 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-15 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-5400deg);
    }
  }

  @keyframes circle-15 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-5400deg);
    }
  }

  .holder .circle:nth-child(16) {
    border: 13px solid black;
    border-bottom: none;
    border-radius: 465px 465px 0 0;
    width: 465px;
    height: 232.5px;
    z-index: 0;
    -webkit-animation: circle-16 10s infinite ease-in-out;
    animation: circle-16 10s infinite ease-in-out;
  }

  @-webkit-keyframes circle-16 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-5760deg);
    }
  }

  @keyframes circle-16 {
    0% {
      transform: translateX(-50%) rotate(0deg);
    }

    100% {
      transform: translateX(-50%) rotate(-5760deg);
    }
  }