cardsforscience/css/style.css

body {
  padding: 80px 0;
}

#detector {
  cursor: pointer;
  margin: 0 auto;
}

.bar rect {
  fill: steelblue;
  shape-rendering: crispEdges;
}

.bar text {
  fill: #fff;
}

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