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Accordion

Accordion

A set of collapsible panels with headings.

Installation

Copy and paste the following code into your project.

"use client"
 
import * as React from "react"
import { Accordion as AccordionPrimitive } from "@base-ui-components/react/accordion"
import { ChevronDown } from "lucide-react"
 
import { cn } from "@/lib/utils"
 
const Accordion = AccordionPrimitive.Root
 
const AccordionItem = React.forwardRef<
  React.ElementRef<typeof AccordionPrimitive.Item>,
  React.ComponentPropsWithoutRef<typeof AccordionPrimitive.Item>
>(({ className, ...props }, ref) => (
  <AccordionPrimitive.Item
    ref={ref}
    className={cn("border-b border-border", className)}
    {...props}
  />
))
AccordionItem.displayName = "AccordionItem"
 
const AccordionTrigger = React.forwardRef<
  React.ElementRef<typeof AccordionPrimitive.Trigger>,
  React.ComponentPropsWithoutRef<typeof AccordionPrimitive.Trigger>
>(({ className, children, ...props }, ref) => (
  <AccordionPrimitive.Header className="flex">
    <AccordionPrimitive.Trigger
      ref={ref}
      className={cn(
        "flex flex-1 items-center justify-between py-4 font-semibold transition-all data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&[data-panel-open]>svg]:rotate-180",
        className,
      )}
      {...props}
    >
      {children}
      <ChevronDown
        aria-hidden="true"
        className="size-4 shrink-0 transition-transform duration-200"
      />
    </AccordionPrimitive.Trigger>
  </AccordionPrimitive.Header>
))
AccordionTrigger.displayName = AccordionPrimitive.Trigger.displayName
 
const AccordionPanel = React.forwardRef<
  React.ElementRef<typeof AccordionPrimitive.Panel>,
  React.ComponentPropsWithoutRef<typeof AccordionPrimitive.Panel>
>(({ className, children, ...props }, ref) => (
  <AccordionPrimitive.Panel
    ref={ref}
    className="h-[var(--accordion-panel-height)] overflow-hidden text-sm transition-[height] data-[ending-style]:h-0 data-[starting-style]:h-0"
    {...props}
  >
    <div className={cn("pb-4 pt-0", className)}>{children}</div>
  </AccordionPrimitive.Panel>
))
AccordionPanel.displayName = AccordionPrimitive.Panel.displayName
 
export { Accordion, AccordionItem, AccordionTrigger, AccordionPanel }

Update the import paths to match your project setup.

Usage

import {
  Accordion,
  AccordionItem,
  AccordionPanel,
  AccordionTrigger,
} from "@/components/ui/accordion"
<Accordion>
  <AccordionItem value="item-1">
    <AccordionTrigger>Is it accessible?</AccordionTrigger>
    <AccordionPanel>
      Yes. It adheres to the WAI-ARIA design pattern.
    </AccordionPanel>
  </AccordionItem>
</Accordion>