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Lists MUST be constructed using the appropriate semantic markup.
Tables
Required
- Table headers MUST be designated with <th>.
- Data table header text MUST accurately describe the category of the corresponding data cells.
- Table data cells MUST be associated with their corresponding header cells.
- Table data group headers MUST be associated with their corresponding data cell groups.
- Header/data associations that cannot be designated with <th> and scope MUST be designated with headers plus id
- Data table headers and data associations MUST NOT be referenced across nested, merged, or separate tables.
- Layout tables MUST NOT contain data table markup.
Non-required / best practice
- Tabular data SHOULD be represented in a <table>.
- Data tables SHOULD have a programmatically-associated caption or name.
- The name/caption of a data table SHOULD describe the identity or purpose of the table accurately, meaningfully, and succinctly.
- The name/caption of each data table SHOULD be unique within the context of other tables on the same page.
- A data table summary, if provided, SHOULD make the table more understandable to screen reader users.
- Tables SHOULD NOT be used for the purpose of purely visual (non-data) layout.
iFrames
Required
Non-required / best practice