body {
    background-color: beige;
}

svg {
    overflow: hidden;
  }

  .node {
    text-align: center;
  }

  .node rect {
    stroke: #333;
    stroke-width: 1.5px;
    fill: #fff;
  }
  .edgeLabel rect {
    fill: #fff;
  }
  .edgePath {
    stroke: #333;
    stroke-width: 1.5px;
    fill: none;
  }