@import url("https://code.highcharts.com/css/highcharts.css");

#container {
    height: 400px;
    max-width: 800px;
    margin: 0 auto;
}

.highcharts-xaxis-grid .highcharts-grid-line {
    stroke-width: 2px;
    stroke: #d8d8d8;
}

.highcharts-xaxis .highcharts-tick {
    stroke-width: 2px;
    stroke: #d8d8d8;
}

.highcharts-minor-grid-line {
    stroke-dasharray: 2, 2;
}
