svg {
  border: 1px solid black;
  margin-left: auto;
  margin-right: auto;
}

#main .content .graph_node a {
  text-decoration: none;
}

.graph_node a text {
  font: 8px sans-serif;
  fill: #53534f;
}

.graph_circle {
  stroke: #f7f7f7;
  stroke-width: 1.5px;
}

.graph_link {
  stroke: #e15912;
  stroke-opacity: .2;
  stroke-width: 0.5px;
}