What the person is doing
The content areas are peers under the same parent task.
Application · lesson 9 of 21 · Navigation And Wayfinding
Underlying principle: Navigation exposes the site's structure at the moment a person needs to move. A useful route has a recognizable label, a predictable destination, and an orientation cue after arrival.
Group sibling panels behind labeled tabs, keep one active at a time, and make the active section and panel relationship explicit.
Navigation exposes the site's structure at the moment a person needs to move. A useful route has a recognizable label, a predictable destination, and an orientation cue after arrival.
The content areas are peers under the same parent task.
Group sibling panels behind labeled tabs, keep one active at a time, and make the active section and panel relationship explicit.
Default active tab and visible panel.
Are these sections truly peers in the same task context?
The active tab is programmatically exposed with its controlled panel.
The content areas are peers under the same parent task.
The full lab is intentionally loaded on request. That keeps this reading page fast while preserving the strong and weak states, keyboard checks, and failure scenarios.
The content areas are peers under the same parent task.
Group sibling panels behind labeled tabs, keep one active at a time, and make the active section and panel relationship explicit.
Default active tab and visible panel.
Changing URL pages while presenting the control as local tabs.
Expose the active tab and associated panel.
W3C Web Accessibility Initiative - checked
APG documents tablist, tab, tabpanel, aria-controls, aria-selected, arrow-key movement, and manual activation.
GOV.UK Design System - checked
GOV.UK supports tabs for related content shown one section at a time and warns against page navigation, sequential reading, and cross-panel comparison.
IBM Carbon Design System - checked
Carbon distinguishes line, contained, and vertical tabs, connects selected tabs to panels, and warns not to use vertical tabs as replacement navigation.
Source trail checked: