The border-spacing property sets the distance between the borders of adjacent cells.The border-spacing Property is used to set the distance between the borders of neighboring cells in the Table. This property works only when the border-collapse property is set to no-collapse separate.
Note: This property works only when
length-length: It is used to set the distance between the borders of adacent cells. It does not allow negative values.
If two values are defined, first value defines the horizontal space and second value defines the verical spacing.
If only one value is given then it defines the both horizontal and vertical spacing between the adjacent borders of cells.