Structure tabular information using table markup
Make sure header cells and data cells are properly coded using table markup
Information is considered tabular when a logical relationship between different data pieces is represented in columns and rows. In order for the logical relationships to be perceived, columns and rows must be recognizable by users. The relationship presented between information in data tables must be preserved even when users cannot see the table or the presentation format is changed.
To do so, simply make sure that whenever content calls for tabular information, that the markup used can reliably convey the structure and [...]