Specifies the horizontal and vertical offset from the window's boundaries.
This option is used to resolve collisions. If the specified offset from the specified target leads to a collision with the window's boundary, the boundaryOffset value is used to position the element near the place of collision.
This option accepts an object containing the x and y fields which specify horizontal and vertical offset respectively, or a string in the following format: "5 -10", where the first number is a horizontal offset and the second number is a vertical offset in pixels.
Specifies the horizontal offset.
Specifies the vertical offset.