Success Criterion 1.4.10
Conformance level AA

Desktop Hover Menu That Becomes Unreachable on Small Screens

1.4.10 — Reflow

Scenario

Setting

A streaming music app's search results

What’s wrong

Hover-dependent desktop menus retained at small widths where hover targets become unreachable (functionality lost).

Example

.layout { width: 1200px; }

Why it matters

Low-vision users at high zoom and people reading on narrow mobile viewports.

How to test

Set the viewport to 320px and try to open hover-dependent desktop menus: if the hover target becomes unreachable at small width with no tap alternative, it fails.

How to fix

At 320 CSS px width (400% zoom on a 1280px desktop), content must reflow into one column with only vertical scrolling and nothing missing or unreachable. .layout { max-width: 1200px; width: 100%; } Content must reflow into one column at 320px wide with no horizontal scrolling and nothing missing.

Outcome

On a streaming music app's search results, this barrier is gone for low-vision users at high zoom and people reading on narrow mobile viewports — they reach the same outcome without extra effort.

Who is affected