The rules can be condensed to the statement that the stronger attribute wins. If, for example, one cell has a red border of 2 point width, and the adjacent cell has a blue border of 3 point width, then the common border between these two cells will be blue with 3 point width.
规则可以压缩为语句“较强属性优先”。例如，如果某个单元格的边框为 2 磅的红色边框，其相邻单元格的边框为 3 磅的蓝色边框，则这两个单元格的公共边框将是 3 磅的蓝色边框。