html, body {
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100%;
}

svg {
  width: 100%;
}

.node {
  font-size: 14px;
  font-family: sans-serif;
  user-select: none;
  -webkit-user-select: none;
  cursor: default;
}

.link {
  fill: none;
  stroke: #DDD;
  shape-rendering: crispEdges;
}
.internal.node {
  font-weight: bold;
  cursor: pointer;
}