<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>Pie Chart Example</title>
        <style type="text/css">>
         body {
             margin: 0;
         }
         canvas {
             margin: 1rem;
             box-sizing: border-box;
             max-height: 500px;
             max-width: 500px;
             margin-bottom: 1rem;
         }
        </style>
        <script src="https://cdn.jsdelivr.net/npm/chart.js@2.8.0"></script>
    </head>
    <body>
        <canvas id="chart"