折线图的折现可以不贴边吗

[Elliott-Hu]

• [x] I have searched the issues of this repository and believe that this is not a duplicate.

What problem does this feature solve?

样式调整

What does the proposed API look like?

折线图的实现现在是挨着表格边框线的，希望折线图的起点和重点距离边框线有一段距离，这个要怎么设置？

预期实现