.axis path,
.axis line {
  fill: none;
  stroke: gray;
  stroke-width: 2px;
  shape-rendering: crispEdges;
}

.axis text {
  font: 10px sans-serif;

.x.axis path {
  display: none;
}

.line {
  fill: none;
  stroke: steelblue;
  stroke-width: 3px;
}