How to continue horizontal lines using the highcharts library?

Question

Highcharts

Hello. How to use this lib to continue the horizontal lines so that they slightly extend from the end and edge of the chart, as shown in this figure.

here is my code:

Answer 1

you can play with the values

xAxis: {
                min: 0.75,
                max: 6.25,
                tickPixelInterval: 50,
                categories: [
                    '',
                    'Январь',
                    'Февраль',
                    'Март',
                    'Апрель',
                    'Май',
                    'Июнь',
                    'Июль',
                    ''
                ],

series: [{
                ...
-                data: [300.22, 402.26, 385.89, 556.56, 412.38, 190.15, 220.22],
+               data: [200, 300.22, 402.26, 385.89, 556.56, 412.38, 190.15, 220.22, 300],
                ...
}