Tables
What do I need to do?
Do not use tables for layout unless it makes sense when linearized. If a table is used for layout, do not use any structural markup for visual formatting.
How do I do this?
For a simple data table, keep column headers in the same column as the cell, and row headers in the same row as the cell. Use <th> to identify a header.
Why is this important?
Information in a data table is lost when it is linearized, which is what happens with a screen reader. For example, a TV schedule organized in a table may leave users who cannot see the screen unsure about what time and what channel a certain show is on that appears in the middle of the table.
For more detailed information, consult the WebAIM tutorial.
