body {
  font: 10px sans-serif;
}

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

.bar {
  fill: steelblue;
}

.young-tooltip, .old-tooltip {
  text-anchor: middle;
  font-family: sans-serif;
  font-size: 10px;
  font-weight: bold;
  fill: black;
}

#old {
  padding-top: 20px;
  padding-bottom: 100px;
}