How to remove dividing lines on web tables.
In fact, the three tables above have three rows and three columns. The trick to hide the divider is rules. If you look at the source code of these three tables, we can see that there are rules in the <TABLE> tag. It has three parameters (cols, rows, none). When rules=cols, the table hides the vertical divider, so we can only see the rows of the table; when rules=rows, the horizontal divider is hidden, so we can only see the columns of the table; when rules=none, the vertical divider and the horizontal divider will be hidden.