JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
<div id="chartContainer" style="height: 360px; width: 100%;"></div>

JavaScript

var chart = new CanvasJS.Chart("chartContainer", {
  title: {
    text: "Custom color & thickness for a grid"
  },
  axisY:{
    stripLines:[
      {                
        value: 20,                
        color: "red",
        thickness: 5
      }
    ]
  },
  data: [
    {
      type: "splineArea",
      dataPoints: [
        { x: 1910, y: 5 }, 
        { x: 1920, y: 9 }, 
        { x: 1930, y: 17 }, 
        { x: 1940, y: 32 }, 
        { x: 1950, y: 22 }, 
        { x: 1960, y: 14 }, 
        { x: 1970, y: 25 }, 
        { x: 1980, y: 18 }, 
        { x: 1990, y: 20 }
      ]
    }
  ]        
});
chart.render();