Try adding [(border:1.4), ::5] if you can't get the effect

如果无法获得构图，尝试添加[(border:1.4), ::5]

The inner border is most likely rectangle by default. You may use a shape prompt to modify it. I have tested with hexagon.

内部的边框基本上都是方形的。你可以用一些词来改变它的形状。我测试过hexagon（六边形）