.directed_force path.link {
  fill: none;
  stroke: #000;
  stroke-width: 1.5px;
}

.directed_force circle {
  fill: #ccc;
  stroke: #000;
  stroke-width: 1.5px;
  stroke-opacity: 1;
  opacity: 0.75;
}

.directed_force text {
  fill: #000;
  font: 10px sans-serif;
  pointer-events: none;
}