[Solved]-Chart.js: Display only the horizontal gridline at zero index-Chart.js

Great solution from Ted Whitehead. I found this also works with simply;

gridLines: {
  color: "transparent"
}

This also seems to work:

gridLines: {
  lineWidth: 0,
  zeroLineWidth: 1
}

These settings worked for me:

gridLines: {
  color: "transparent",
  display: true,
  drawBorder: false,
  zeroLineColor: "#ccc",
  zeroLineWidth: 1
}

http://www.chartjs.org/docs/latest/axes/styling.html#grid-line-configuration