language.css

body {
  font: 13px sans-serif;
}

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

.mesh {
		fill: none;
  		stroke: lightgrey;
  		stroke-width: 2px;
  		stroke-linejoin: round;
	}

.dot {
  stroke: #000;
}

/* Tooltip container */
.tooltip {
    position: absolute;
    text-align: center;
    display: inline-block;
    width: 125px;
    height: 75px;
    padding: 2px;
    pointer-events: none;
    border: 2px solid black;
    border-radius: 15px;
    background: aqua;
}

svg {
  font: 10px sans-serif;
}

.caption {
  font-weight: bold;
}

.key path {
  display: none;
}

.key line {
  stroke: #000;
  shape-rendering: crispEdges;
}

.county-border {
  fill: none;
  stroke: #000;
  stroke-opacity: .3;
}