JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdn.canvasjs.com/canvasjs.min.js"></script>

<div id="chartContainer" style="height: 360px; width: 100%;"></div>

CSS

.canvasjs-chart-canvas {
  border-radius: 12px;
}

#chartContainer {
  border: 1px solid #dedede;
  border-radius: 12px;
}

JavaScript

window.onload = function () {
	var chart = new CanvasJS.Chart("chartContainer", {
		title:{
			text: "Adding Border Radius to Canvas"              
		},
		data: [              
		{
			// Change type to "doughnut", "line", "splineArea", etc.
			type: "column",
			dataPoints: [
				{ label: "apple",  y: 10  },
				{ label: "orange", y: 15  },
				{ label: "banana", y: 25  },
				{ label: "mango",  y: 30  },
				{ label: "grape",  y: 28  }
			]
		}
		]
	});
	chart.render();
}