/* Make the visualization container fill the page. */
#container {
  position: fixed;
  left: 0px;
  right: 0px;
  top: 0px;
  bottom: 0px;
}

/* Style the nodes of the graph. */
.node {
  stroke: black;
  stroke-width: 1.5;
}
.nodeLabel {
  font-size: 2em;
  /* Center text horizontally */
  text-anchor: middle;
}

/* Style the links of the graph. */
.link {
  stroke: black;
}

/* Set the arrowhead size. */
.arrow {
  stroke-width: 1.5px;
}