svg g.tick line {
  opacity: 0.2;
}

line.grid {
  fill: none;
  shape-rendering: crispEdges;
  stroke: black;
  stroke-width: 1px;
  opacity: 0.2;
}

path.diamond {
  fill: none;
  stroke: black;
  stroke-width: 1px;
}

circle.circle {
  fill: none;
  stroke: black;
  stroke-width: 1px;
}