Display only the borders between the rows:
The <table> rules attribute is not supported in HTML5. Use CSS instead.
The rules attribute specifies which parts of the inside borders that should be visible.
For practical reasons, it may be better to not specify any rules, and use CSS instead.
The numbers in the table specify the first browser version that fully supports the attribute.
Note: Chrome and Safari displays this attribute incorrectly: They add the affected outside borders in addition to the inside borders.
|groups||Lines between row groups and column groups|
|rows||Lines between rows|
|cols||Lines between columns|
|all||Lines between rows and columns|