/* https://codepen.io/tobyj/pen/QjvEex?editors=1100 */
.lightrope {
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  position: absolute;
  z-index: 1;
  margin: -15px 0 0 0;
  padding: 0;
  pointer-events: none;
  width: 100%;
  li {
    position: relative;
    animation-fill-mode: both;
    animation-iteration-count: infinite;
    list-style: none;
    margin: 0;
    padding: 0;
    display: block;
    width: 12px;
    height: 28px;
    border-radius: 50%;
    margin: 40px/2;
    display: inline-block;
    background: rgba(0, 247, 165, 1);
    box-shadow: 0px 28px/6 12px * 2 3px rgba(0, 247, 165, 1);
    animation-name: flash-1;
    animation-duration: 2s;
    &:nth-child(2n + 1) {
      background: rgba(0, 255, 255, 1);
      box-shadow: 0px 28px/6 12px * 2 3px rgba(0, 255, 255, 0.5);
      animation-name: flash-2;
      animation-duration: 0.4s;
    }
    &:nth-child(4n + 2) {
      background: rgba(247, 0, 148, 1);
      box-shadow: 0px 28px/6 12px * 2 3px rgba(247, 0, 148, 1);
      animation-name: flash-3;
      animation-duration: 1.1s;
    }
    &:nth-child(odd) {
      animation-duration: 1.8s;
    }
    &:nth-child(3n + 1) {
      animation-duration: 1.4s;
    }
    &:before {
      content: "";
      position: absolute;
      background: #222;
      width: (12px - 2);
      height: 28px/3;
      border-radius: 3px;
      top: (0 - (28px/6));
      left: 1px;
    }
    &:after {
      content: "";
      top: (0 - 28px/2);
      left: 12px - 3;
      position: absolute;
      width: 40px + 12;
      height: (28px/3 * 2);
      border-bottom: solid #222 2px;
      border-radius: 50%;
    }
    &:last-child:after {
      content: none;
    }
    &:first-child {
      margin-left: -40px;
    }
  }
}
@keyframes flash-1 {
  0%,
  100% {
    background: rgba(0, 247, 165, 1);
    box-shadow: 0px 28px/6 12px * 2 3px rgba(0, 247, 165, 1);
  }
  50% {
    background: rgba(0, 247, 165, 0.4);
    box-shadow: 0px 28px/6 12px * 2 3px rgba(0, 247, 165, 0.2);
  }
}
@keyframes flash-2 {
  0%,
  100% {
    background: rgba(0, 255, 255, 1);
    box-shadow: 0px 28px/6 12px * 2 3px rgba(0, 255, 255, 1);
  }
  50% {
    background: rgba(0, 255, 255, 0.4);
    box-shadow: 0px 28px/6 12px * 2 3px rgba(0, 255, 255, 0.2);
  }
}
@keyframes flash-3 {
  0%,
  100% {
    background: rgba(247, 0, 148, 1);
    box-shadow: 0px 28px/6 12px * 2 3px rgba(247, 0, 148, 1);
  }
  50% {
    background: rgba(247, 0, 148, 0.4);
    box-shadow: 0px 28px/6 12px * 2 3px rgba(247, 0, 148, 0.2);
  }
}