What this means
A narrow screen should not hide table information. A wide data table may need sideways scrolling, but every column must remain reachable and the headings must still make sense.
Passing examples
- A timetable scrolls sideways to expose every column.
- A short table fits a phone screen with readable text and clear headers.
- A responsive table keeps the heading associated with each value when its layout changes.
Failing examples
- The final price column is cut off with no way to reach it.
- The entire table is shrunk until the words are too small to read.
- A mobile layout separates values from their headings, leaving readers unable to tell what they mean.