#dendrogram .node circle {
  fill: #fff;
  stroke: steelblue;
  stroke-width: 1.5px;
}

#dendrogram .node {
  font: 10px sans-serif;
  font-weight: bold;
}

#dendrogram .link {
  fill: none;
  stroke: #ccc;
  stroke-width: 1.5px;
}