- Success Criterion 1.4.10
- Conformance level AA
Form Labels or Inputs That Clip at Narrow Screen Widths
1.4.10 — Reflow
Scenario
Setting
A bank's mobile money-transfer screen
What’s wrong
Form layouts where labels/inputs clip or inputs shrink to unusable widths.
Example
Here's a real case from a bank's mobile money-transfer screen: form layouts where labels/inputs clip or inputs shrink to unusable widths.
Why it matters
Low-vision users at high zoom and people reading on narrow mobile viewports. In this case (a bank's mobile money-transfer screen), they can't perceive part of the content because of how it's displayed.
How to test
Set the viewport to 320px and check form layouts: labels/inputs that clip or shrink to unusably narrow widths fail.
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.
Outcome
Once corrected, a bank's mobile money-transfer screen lets them tell the information apart without relying on color.
Who is affected
Low-vision users at high zoom and people reading on narrow mobile viewports.
Learn more
- Understanding Understanding document (opens in a new tab)
Related scenarios
- Content or Controls That Vanish Entirely When the Page Reflows
- Vertical Content That Forces Horizontal Scrolling at 320px
- Fixed-Width Container Forcing Scrolling in Two Directions
- Overlapping Content When the Page Is Zoomed to 400%
- Sticky Bars That Eat Up Most of a 320px Mobile Screen
- Desktop Breakpoint That Never Switches to Mobile Layout