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

.grid path,
.grid line {
  fill: none;
  stroke: rgba(0, 0, 0, 0.25);
  shape-rendering: crispEdges;
}

.line {
  fill: none;
  stroke-width: 2.5px;
}