Popover Placement and Boundary
Adjust the placement of the content by using the placement prop. It can be set to a specific placement or automatically calculated. It is recommended to use the boundary prop in tandem with auto placement. This ensures that the auto placement will happen within a specific container instead of the entire page. The boundary prop accepts all selector names (eg: .class, #id, and [attribute]).
Auto placement with a boundary (recommended): The following container has the .js-bolt-popover-boundary class and the popover’s boundary prop is set to said class. The popover’s auto placement will always appear within the container.
Specific placement: When setting a specific placement, it will ignore the boundary prop and always render the placement stated. This feature will cause undesired overflow issues in smaller screens, use with caution.