Getting StartedInstall and bootstrap headless foundations 4
LayoutHeadless structural primitives for expandable and container patterns 6
OverlayHeadless modal and floating layer behavior 3
FeedbackHeadless notification and status communication patterns 5
FormHeadless input and selection contracts 17
UtilityReusable action, identity, and clipboard behavior 6
NavigationHeadless trails, trees, menus, and command surfaces 7

Examples

Use determinate bars when you know the range, then hand off to an indeterminate segment when the system is still working but exact completion is unknown.

Determinate metrics

Show task completion when your app can report a real numeric value.

Headless determinate bars (plain CSS)

Upload progress
Quality checks

Indeterminate handoff

Switch to an indeterminate segment when work continues but exact progress is unavailable.

Headless handoff bars (plain CSS)

Preparing release
Rollout