SO: Displaying bar graph with large data point names on mobile screen

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

  <script nonce="undefined" src="https://cdn.zingchart.com/zingchart.min.js"></script>
  <style>
    html,
    body {
      height: 100%;
      width: 100%;
      margin: 0;
      padding: 0;
    }

    #myChart {
      height: 100%;
      width: 100%;
      min-height: 150px;
    }
  </style>
</head>

<body>
  <div id='myChart'></div>
  <script>
    ZC.LICENSE = ["569d52cefae586f634c54f86dc99e6a9", "b55b025e438fa8a98e32482b5f768ff5"];
    var myConfig = {
      type: 'bar',
      plot: {
        valueBox: {
          fontColor: 'black',
          decimals: 1
        }
      },
      scaleX: {
        labels: ['Ch 1: Intro to Math', 'Ch 2: More Math', 'Ch 3: Learning Algebra', 'Ch 4: And Some Calculus'],
        item: {
          maxChars: 4
        },
        tooltip: {
          text: '%v',
          fontColor: 'black',
          textAlpha: 1,
          alpha: 0.8,
          backgroundColor: 'white',
          borderWidth: 1,
          borderColor: 'gray',
          borderRadius: '3px',
          padding: '5%'
        },
        guide: {
          visible: true,
          lineStyle: 'solid'
        }
      },
      scaleY: {
        values: '0:20:4',
        guide: {
          lineStyle: 'solid'
        }
      },
      series: [{
          values: [0, 0, 17, 0],
          backgroundColor: '#ffff00'
        },
        {
          values: [1, 2, 6, 18],
          backgroundColor: '#194d19'
        }
      ]
    };

    zingchart.render({
      id: 'myChart',
      data: myConfig,
      height: 600,
      width: 400
    });
  </script>
</body>

</html>

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

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

<body>
  <div id='myChart'></div>
</body>

</html>

html,
body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

#myChart {
  height: 100%;
  width: 100%;
  min-height: 150px;
}

var myConfig = {
  type: 'bar',
  plot: {
    valueBox: {
      fontColor: 'black',
      decimals: 1
    }
  },
  scaleX: {
    labels: ['Ch 1: Intro to Math', 'Ch 2: More Math', 'Ch 3: Learning Algebra', 'Ch 4: And Some Calculus'],
    item: {
      maxChars: 4
    },
    tooltip: {
      text: '%v',
      fontColor: 'black',
      textAlpha: 1,
      alpha: 0.8,
      backgroundColor: 'white',
      borderWidth: 1,
      borderColor: 'gray',
      borderRadius: '3px',
      padding: '5%'
    },
    guide: {
      visible: true,
      lineStyle: 'solid'
    }
  },
  scaleY: {
    values: '0:20:4',
    guide: {
      lineStyle: 'solid'
    }
  },
  series: [{
      values: [0, 0, 17, 0],
      backgroundColor: '#ffff00'
    },
    {
      values: [1, 2, 6, 18],
      backgroundColor: '#194d19'
    }
  ]
};

zingchart.render({
  id: 'myChart',
  data: myConfig,
  height: 600,
  width: 400
});