추상적인：可以通过设置 column 的 pointPadding 和 borderWidth 进行设置。pointPadding: NumberPadding between each column or bar, in x axis units.borderWidth: NumberThe width of the border surrounding each column or bar.
可以通过设置 column 的 pointPadding 和 borderWidth 进行设置。
pointPadding: Number
Padding between each column or bar, in x axis units.
borderWidth: Number
The width of the border surrounding each column or bar.
plotOptions: {
column: {
pointPadding: 0.05,
borderWidth: 0
}
},