.area path {
  fill: steelblue;
}

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

.brush .extent {
  stroke: #FFF;
  fill: orange;
  fill-opacity: .200;
  shape-rendering: crispEdges;
}

svg {
  font: 10px sans-serif;
}

.line {
  fill: none;
  stroke: #369;
  stroke-width: 1.5px;
}