<canvas id="popChart" width="600" height="400"></canvas>

body {
  height: 600px;
}

canvas {
  max-height: 100%;
}

var popCanvas = document.getElementById("popChart");
var barChart = new Chart(popCanvas, {
  type: 'bar',
  data: {
    labels: ["China", "India", "United States", "Indonesia", "Brazil", "Pakistan", "Nigeria", "Bangladesh", "Russia", "Japan"],
    datasets: [{
      label: 'Population',
      data: [1379302771, 1281935911, 326625791, 260580739, 207353391, 204924861, 190632261, 157826578, 142257519, 126451398],
      backgroundColor: [
        'rgb(255, 99, 132)',
        'rgb(54, 162, 235)',
        'rgb(255, 206, 86)',
        'rgb(75, 192, 192)',
        'rgb(153, 102, 255)',
        'rgb(255, 159, 64)',
        'rgb(255, 99, 132)',
        'rgb(54, 162, 235)',
        'rgb(255, 206, 86)',
        'rgb(75, 192, 192)',
        'rgb(153, 102, 255)'
      ]
    }]
  }
});