src/static/css/lightrope.css
.lightrope {
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  position: absolute;
  margin: -40px 0 0 0;
  padding: 0;
  width: 100%;
  opacity: 1;
  z-index: 0;
}
.lightrope.lightrope-disable {
  opacity: 0;
}
.lightrope .hidden-light {
  opacity: 0;
}
.lightrope-ready {
  cursor: pointer;
}
.lightrope li {
  position: relative;
  -webkit-animation-fill-mode: both;
          animation-fill-mode: both;
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
  list-style: none;
  margin: 0;
  padding: 0;
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin: 20px;
  display: inline-block;
  background: #eee;
}
.lightrope-on li {
  background: #00f7a5;
  box-shadow: 0px 2px 24px 3px #00f7a5;
  -webkit-animation-name: flash-1;
          animation-name: flash-1;
  -webkit-animation-duration: 2s;
          animation-duration: 2s;
}
.lightrope-on li:nth-child(2n+1) {
  background: aqua;
  box-shadow: 0px 2px 24px 3px rgba(0, 255, 255, 0.5);
  -webkit-animation-name: flash-2;
          animation-name: flash-2;
  -webkit-animation-duration: 0.4s;
          animation-duration: 0.4s;
}
.lightrope-on li:nth-child(4n+2) {
  background: #f70094;
  box-shadow: 0px 2px 24px 3px #f70094;
  -webkit-animation-name: flash-3;
          animation-name: flash-3;
  -webkit-animation-duration: 1.1s;
          animation-duration: 1.1s;
}
.lightrope-on li:nth-child(odd) {
  -webkit-animation-duration: 1.8s;
          animation-duration: 1.8s;
}
.lightrope-on li:nth-child(3n+1) {
  -webkit-animation-duration: 1.4s;
          animation-duration: 1.4s;
}
.lightrope li:before {
  content: "";
  position: absolute;
  background: #777;
  width: 10px;
  height: 4px;
  border-radius: 3px;
  top: -2px;
  left: 1px;
}
.lightrope-ready li:after {
  content: "";
  top: -6px;
  left: 11px;
  position: absolute;
  width: 42px;
  height: 10px;
  border-bottom: solid #ccc 2px;
  border-radius: 50%;
}
.lightrope li:last-child:after {
  content: none;
}

@-webkit-keyframes flash-1 {
  0%, 100% {
    background: #00f7a5;
    box-shadow: 0px 2px 24px 3px #00f7a5;
  }
  50% {
    background: rgba(0, 247, 165, 0.4);
    box-shadow: 0px 2px 24px 3px rgba(0, 247, 165, 0.2);
  }
}

@keyframes flash-1 {
  0%, 100% {
    background: #00f7a5;
    box-shadow: 0px 2px 24px 3px #00f7a5;
  }
  50% {
    background: rgba(0, 247, 165, 0.4);
    box-shadow: 0px 2px 24px 3px rgba(0, 247, 165, 0.2);
  }
}
@-webkit-keyframes flash-2 {
  0%, 100% {
    background: aqua;
    box-shadow: 0px 2px 24px 3px aqua;
  }
  50% {
    background: rgba(0, 255, 255, 0.4);
    box-shadow: 0px 2px 24px 3px rgba(0, 255, 255, 0.2);
  }
}
@keyframes flash-2 {
  0%, 100% {
    background: aqua;
    box-shadow: 0px 2px 24px 3px aqua;
  }
  50% {
    background: rgba(0, 255, 255, 0.4);
    box-shadow: 0px 2px 24px 3px rgba(0, 255, 255, 0.2);
  }
}
@-webkit-keyframes flash-3 {
  0%, 100% {
    background: #f70094;
    box-shadow: 0px 2px 24px 3px #f70094;
  }
  50% {
    background: rgba(247, 0, 148, 0.4);
    box-shadow: 0px 2px 24px 3px rgba(247, 0, 148, 0.2);
  }
}
@keyframes flash-3 {
  0%, 100% {
    background: #f70094;
    box-shadow: 0px 2px 24px 3px #f70094;
  }
  50% {
    background: rgba(247, 0, 148, 0.4);
    box-shadow: 0px 2px 24px 3px rgba(247, 0, 148, 0.2);
  }
}
