.st7 {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: dash 20s linear infinite;
}

@keyframes dash {
  to {
    stroke-dashoffset: 0;
  }
}

.st6 {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: dash 20s linear infinite;
}

@keyframes dash {
  to {
    stroke-dashoffset: 0;
  }
}

.st8 {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: dash 20s linear infinite;
}

@keyframes dash {
  to {
    stroke-dashoffset: 0;
  }
}