html, body {
  padding: 0;
  margin: 0;
  height: 100%;
  overflow: hidden;
  font-family: sans-serif;
}

svg {
  width: 100%;
  height: 100%;
}

rect {
  stroke: #fff;
  stroke-width: 0.5px;
  vector-effect: non-scaling-stroke;
}

text {
  pointer-events: none;
  fill: #333;
}

.region path {
  fill-opacity: 0.5;
  stroke-width: 1px;
  stroke-linejoin: round;
  shape-rendering: crispEdges;
  vector-effect: non-scaling-stroke;
}
.region_label {
  vector-effect: non-scaling-stroke;
  font-size: 20;
}

.tile rect {
  stroke: #333;
  stroke-width: 0.2;
}