Level A · WCAG 2.0

1.3.2 Meaningful Sequence

When the order things are read in changes the meaning, that order has to be correct in the markup too.

Manual only No automated check says anything useful.

How it fails in practice

A two-column layout built with CSS positioning where the sidebar comes first in the source, so the page reads sidebar-then-article no matter what it looks like.

How to fix it

Put the DOM in reading order and let CSS place it. Grid and flexbox order are exactly the properties that break this — they move the picture and leave the reading order behind.

At a glance

Level
Level A — the minimum. Failing one of these usually makes something impossible rather than merely hard.
Principle
Perceivable
Guideline
1.3 Adaptable
Added in
WCAG 2.0
EN 301 549
9.1.3.2
Automated check
Manual only

Read the official definition at W3C

Manual only

How far an automated check gets

Nothing automatic decides this. A scanner that reports it as passing is reporting that it did not look. It stays untested until a person tests it and records what they did — which is exactly how we treat it: as untested, not as passed.

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