#### 箭头指向
设置了 `arrowPointAtCenter` 后，箭头将指向目标元素的中心。
#### Arrow pointing
The arrow points to the center of the target element, which set `arrowPointAtCenter`.
```html
Content
Content
Title
Align edge / 边缘对齐
Content
Content
Title
Arrow points to center / 箭头指向中心
```