Success Criterion 2.5.7
Conformance level AA

Split-Pane Layout Resizable Only by Dragging the Divider

2.5.7 — Dragging Movements

Scenario

Setting

A language-learning app's lesson screen

What’s wrong

Split-pane resizing only by dragging the divider.

Example

<div draggable="true" class="reorder-handle"></div> <!-- drag-only reordering -->

Why it matters

People with limited dexterity and switch, eye-gaze, or voice users who cannot drag.

How to test

Try resizing a split-pane layout via a button, keyboard shortcut, or preset sizes instead of dragging the divider: if drag is the only method, it fails.

How to fix

A single-pointer, non-dragging alternative (buttons, menu option, tap) must exist for the drag operation.

<div draggable="true" class="reorder-handle"></div>

<button aria-label="Move item up">↑</button>

<button aria-label="Move item down">↓</button>

Any drag-to-reorder or drag-to-move interaction needs a single-pointer alternative like up/down buttons.

Outcome

On a language-learning app's lesson screen, this barrier is gone for people with limited dexterity and switch — they can complete the task without hitting this wall.

Who is affected