#nations {
  width: 960px;
  height: 546px;
}

text {
  font: 10px sans-serif;
}

.dot {
  stroke: #000;
}

.axis path, .axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

.label {
  fill: #777;
}

.year.label {
  font: 500 196px "Helvetica Neue";
  fill: #DDD;
}

.year.label.active {
  fill: #AAA;
}

.overlay {
  fill: none;
  pointer-events: all;
  cursor: ew-resize;
}