.link line {
  stroke: #696969;
}

.link line.separator {
  stroke: #fff;
  stroke-width: 2px;
}

.node circle {
  stroke: #000;
  stroke-width: 1.5px;
}

.node text {
  font: 10px sans-serif;
  pointer-events: none;
}

svg {border: 1px solid #000;}