[Chartjs]-ChartJS Bar Graph Gap

Set the below option for chart. It will work

var myBarChart = new Chart(ctx, {
    type: 'bar',
    data: data,
    options: {
        scales : {
            xAxes : [{
                barPercentage : 1,
                categoryPercentage : 1
            }]
        }
    }
});

[Sample-Code]

var ctx = document.getElementById("myChart1");
var data = {
    labels: ["January", "February", "March", "April", "May", "June", "July"],
    datasets: [
        {
            label: "My First dataset",
            backgroundColor: [
                'rgba(255, 99, 132, 0.2)',
                'rgba(54, 162, 235, 0.2)',
                'rgba(255, 206, 86, 0.2)',
                'rgba(75, 192, 192, 0.2)',
                'rgba(153, 102, 255, 0.2)',
                'rgba(255, 159, 64, 0.2)'
            ],
            borderColor: [
                'rgba(255,99,132,1)',
                'rgba(54, 162, 235, 1)',
                'rgba(255, 206, 86, 1)',
                'rgba(75, 192, 192, 1)',
                'rgba(153, 102, 255, 1)',
                'rgba(255, 159, 64, 1)'
            ],
            borderWidth: 1,
            data: [65, 59, 80, 81, 56, 55, 40],
        }
    ]
};
    var myBarChart = new Chart(ctx, {
    type: 'bar',
    data: data,
    options: {
        scales : {
            xAxes : [{
                barPercentage : 1,
                categoryPercentage : 1
            }]
        }
    }
});