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SidebarPro4
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What’s new80 new
BlocksSidebar

SidebarPro

App and docs sidebars: a folding rail, a workspace switcher, a mail shell, and a docs tree.

4 variants

App railAn app shell whose sidebar folds into an icon rail and slides in as a sheet on phones.

Live block · sample data

When to use

  • The frame of a product app with a sidebar, breadcrumbs, and content area.
  • Apps with nested nav groups that should fold into an icon rail.
  • Shells that need a navigation sheet on narrow widths.

When not to use

  • Use workspace-sidebar when workspace switching and favorites matter more than the shell.
  • Use docs-sidebar for documentation.
  • Use breadcrumb on its own when the page already has navigation.

Installation

Pro source and install commands unlock with a Pro plan.

Usage

Use this as the frame of a product app. Map the sections to your routes, send selection to your router, and persist the collapsed state per person; press [ to fold the rail.

example.tsx
1import { SidebarRail } from "@/registry/blocks/sidebar-rail/sidebar-rail";2 3export default function AppShell() {4  return (5    <main>6      <SidebarRail />7    </main>8  );9}
Built fromTooltipAvatarAvatar groupBadgeAnimated counter

API reference

SidebarRail

An app shell with a sidebar that folds into an icon rail, nested nav groups, breadcrumbs, and a sheet on narrow widths. Sections and page content are sample data.

No props.

Keyboard interactions

[
Folds or unfolds the rail when focus is not in a text field, menu, or dialog.
Escape
Closes the navigation sheet on narrow widths.

Accessibility

  • Nav rows set aria-current="page" on the active item and aria-expanded on groups.
  • The narrow layout uses a Radix dialog sheet that moves focus to the current item when it opens.
  • Rail icons show Radix tooltips with their labels, and section changes are announced in a status region.

Motion

  • The sidebar folds to a rail on a spring and nested groups expand by height.
  • The breadcrumb rises into the new section name.
  • Reduced motion makes folding and group changes instant.

Responsive behavior

  • Below 640px container width the sidebar is replaced by a menu button that opens a Radix dialog sheet, up to 288px wide.
  • The sheet drags closed to the left, and a ResizeObserver closes it when the shell widens past 640px.
  • Content rows drop the timestamp below 420px of content width.

Performance

  • The shell has a fixed 640px height and scrolls its content inside, so it does not reflow the page.
  • Rail tooltips mount only while shown through Radix.

Notes for AI

Give your coding assistant the Markdown reference instead of screenshots.

  • Use as the frame of a product app.
  • Map the sections to your routes, send selection to your router, and persist the collapsed state per person.
  • Composes Arc tooltip, avatar, avatar-group, badge, and animated-counter.
/components/blocks/sidebar/markdown

The full library index for assistants is at /llms.txt.

Related

Sidebar: WorkspaceProBlockA product sidebar with a workspace switcher, live search, draggable favorites, and inline projects.Sidebar: DocsProBlockA docs layout with a live filtering nav tree, version switcher, and a gliding on this page outline.Sidebar: InboxProBlockA mail sidebar whose Compose button grows into a composer and whose folders take dropped mail.BreadcrumbComponentShow where a page sits in a hierarchy.TooltipComponentShort supporting text for unfamiliar controls.
PreviousAI composerNextSettings page
Arc · 75 block pagesllms.txt

On this page

  • Preview
  • When to use
  • When not to use
  • Installation
  • Usage
  • API reference
  • Keyboard
  • Accessibility
  • Motion
  • Responsive behavior
  • Performance
  • Notes for AI
  • Related
View as Markdown
NNorthlineProduct design
Workspace
Pinned
Emma CollinsProduct designer
  1. Northline
  2. Projects
  3. Checkout redesign
Marcus JohnsonJasmine BrooksEmma Collins+1

Checkout redesign

Fewer steps from bag to confirmation. Beta opens October 14.

Screens380012345678900123456789
Open issues700123456789
Days to beta220012345678900123456789

Screens in flight

  • Address stepAutocomplete and postcode orderIn reviewToday
  • Payment sheetApple Pay and saved cardsIn progressThu
  • ConfirmationReceipt, tracking, and next stepsDoneMon