如何创建一个100%宽度和内部边框的HTML表?

If you make a normal table with 100% width and give the cells some borders the borders will of course go around all edges of all cells. But what if you want tables where the cells are shaded but the borders are "clear" (the same colour as the containing element of the table). In this case you probably want borders to appear on the internal edges of table cells but not on the outside edges.If you make a normal table with 100% width and