Accessible Component Showcase
A polished demonstration of five keyboard-accessible UI widgets. Every component follows WAI-ARIA Authoring Practices and works fully without a mouse.
Modal Dialog
Tab · Esc · Click backdropA dialog opens from a button. Focus is trapped inside while open. Press Esc or click the backdrop to close. Focus returns to the trigger button on close.
Dropdown Menu
↓ arrow · Enter · Esc · TabA dropdown with keyboard navigation. Press ↓ to open; use ↑↓ to navigate items, Home/End for first/last, Enter or Space to select, Esc to close. The button gets focus.
Tabs
← → · Enter · EscTabs with `role="tablist"` / `role="tab"` / `role="tabpanel"`. Only the active tab is tabbable. Arrow keys move between tabs. Hidden panels use `hidden` attribute.
This is the Overview tab. It shows the main content of the page.
All content is keyboard-accessible. The active tab receives focus when you tab into it.
This is the Features tab. Here you'll find detailed feature descriptions.
Each feature is described with full keyboard support. You can navigate between tabs using arrow keys.
This is the Changelog tab. See the history of changes and updates.
All content is reachable via Tab. Hidden panels are not focusable.
Combobox (Autocomplete)
↑ ↓ · Enter · Esc · TypeA text input with autocomplete. Typing filters a list of ~20 options. Use ↑↓ to navigate, Enter to select, Esc to close. The listbox is never focusable — aria-activedescendant manages the highlight.
Tip: Focus the input and start typing to filter. Use ↑↓ to navigate, Enter to select.
Accordion / Disclosure
Enter · Space · EscMultiple accordion items can be open simultaneously. Use Enter or Space to toggle. Each accordion has a trigger button with `aria-expanded` and `aria-controls`, and the body animates closed without removing `hidden`.
To open the dropdown, click the button or press Enter or Space.
Use ↓ to move through items and ↑ to go up. Press Esc to close.
A focus trap keeps the keyboard focus within the open element — tab cycles only inside it.
While a modal is open, the page behind is not focusable. The modal's focus returns to the trigger on close.
ARIA attributes (role, aria-*) describe the widget's semantics to assistive technologies.
Key attributes: `role` defines the widget type, `aria-expanded` reflects state, `aria-controls` points to the controlled region.
Animate height for smooth transitions. Use `hidden` attribute for accessibility — the element should not be in the tab order while closed.
The `hidden` attribute is the accessibility way to hide content. Animate the height while keeping `hidden` off.