F Kitchen Sink

Accessibility audit rules

Orientation

Accessibility rule handbook metadata

Rule
DET.A11Y.GENERIC.ORIENTATION · lane deterministic · scope generic
Page status
current
page_version
2803adbb5a2621f834d21bfdd519389287ccb8d04c9d39d52917403d772caf62
generated_at
2026-05-28T05:09:12.000Z
registry_fingerprint
b3797010c3ca988bb0d21d5e85d4efece0b9e83f311c2d4981ebbf402df7a7c2

Related WCAG success criteria

Indicative mapping for compliance reporting — not a conformance claim. Criteria: 1.3.4

How this rule is checked

Deterministic lane — scope generic. Detected by det-a11y-generic-*.check.js or the axe lane for WCAG-tagged violations.

  • Harness: auditor-tests/invoke-a11y-ruleset-harness.sh on the Before fixture.
  • Audit: analyze-website-a11y.mjs --only-deterministic-rule-ids DET.A11Y.GENERIC.ORIENTATION

Module: docs/design/a11y-audit/deterministic-a11y-rules.md#det-a11y-generic-orientation. See Before / After below.

Purpose

Do not lock viewport or CSS to one orientation (1.3.4).

Passing signals

  • DOM and/or repo signals satisfy the rule implementation in tools/website-a11y-auditor.
  • For axe-backed WCAG criteria, use --lanes axe,det with an appropriate --standard preset.

Failing signals

  • Auditor emits a finding with ruleId DET.A11Y.GENERIC.ORIENTATION on the crawled URL.
  • Harness: auditor-tests/invoke-a11y-ruleset-harness.sh DET.A11Y.GENERIC.ORIENTATION expects ≥1 finding on the Before fixture.

Before example

Before (failing example)

Content forced to landscape.

After example

After (passing example)

Works in portrait and landscape.

Evidence and remediation

  1. Reproduce with analyze-website-a11y.mjs --only-deterministic-rule-ids DET.A11Y.GENERIC.ORIENTATION when lane is deterministic.
  2. Apply the After markup pattern (or fix generator source for KS rules).
  3. Re-run harness or audit until the rule is clean on the target URL.