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Alert

An inline callout for form errors, warnings, and success confirmations — status-colored panels with neobrutalist borders and hard shadows.

import { CheckCircle2Icon, InfoIcon } from "lucide-react"

import {

The alert is an inline callout: an icon, a title, a description, and an optional action, arranged on a CSS grid. It's a dependency-free role="alert" div — no primitive underneath, identical across both backends — styled to the neobrutalist recipe: thick borders, hard shadows, and bold type, with a status axis for error, success, warning, and info coloring.

Reach for it when:

  • Form and request errors — surface a validation failure or a failed API call right next to the thing that broke.
  • Success and status confirmations — "settings saved", "trial expiring", "payment received", colored by the status prop.
  • Callouts with a follow-up — a warning or upgrade notice that carries an AlertAction button ("Enable", "Undo", "Upgrade").

Installation

pnpm dlx shadcn@latest add https://neobrutalism.com/r/base/alert.json
npx shadcn@latest add https://neobrutalism.com/r/base/alert.json
yarn dlx shadcn@latest add https://neobrutalism.com/r/base/alert.json
bunx --bun shadcn@latest add https://neobrutalism.com/r/base/alert.json

Copy and paste the following code into your project.

components/ui/alert.tsx
import * as React from "react"
import { cva, type VariantProps } from "class-variance-authority"

import { cn } from "@/lib/utils"

// CSS-grid layout (shadcn-style): drop an icon as a direct child and the alert
// auto-arranges into an icon column + a content column — no manual flex wrapper.
// `has-[>svg]` adds the icon column only when an icon is present. NeoBrutalist
// chrome: hard 2px border, square corners, hard offset shadow.
const alertVariants = cva(
  cn(
    "group/alert relative grid w-full grid-cols-[0_1fr] items-start gap-y-1 rounded border-2 px-4 py-3 text-left text-sm shadow-md",
    "has-[>svg]:grid-cols-[1.25rem_1fr] has-[>svg]:gap-x-3",
    "has-data-[slot=alert-action]:pr-14",
    "[&>svg]:size-5 [&>svg]:translate-y-0.5 [&>svg]:shrink-0 [&>svg]:text-current"
  ),
  {
    variants: {
      // shadcn's variant axis (kept for API compatibility). `solid` is a Neobrutalism
      // addition.
      variant: {
        default:
          "border-border bg-background text-foreground *:data-[slot=alert-description]:text-muted-foreground",
        destructive:
          "border-red-900 bg-red-300 text-red-900 *:data-[slot=alert-description]:text-red-900/80",
        solid:
          "border-border bg-foreground text-background *:data-[slot=alert-description]:text-background/80",
      },
      // Neobrutalism status axis — additive; overrides the variant's colors when set.
      status: {
        error:
          "border-red-900 bg-red-300 text-red-900 *:data-[slot=alert-description]:text-red-900/80",
        success:
          "border-green-900 bg-green-300 text-green-900 *:data-[slot=alert-description]:text-green-900/80",
        warning:
          "border-yellow-900 bg-yellow-300 text-yellow-900 *:data-[slot=alert-description]:text-yellow-900/80",
        info: "border-blue-900 bg-blue-300 text-blue-900 *:data-[slot=alert-description]:text-blue-900/80",
      },
    },
    defaultVariants: {
      variant: "default",
    },
  }
)

function Alert({
  className,
  variant,
  status,
  ...props
}: React.ComponentProps<"div"> & VariantProps<typeof alertVariants>) {
  return (
    <div
      data-slot="alert"
      role="alert"
      className={cn(alertVariants({ variant, status }), className)}
      {...props}
    />
  )
}

function AlertTitle({ className, ...props }: React.ComponentProps<"div">) {
  return (
    <div
      data-slot="alert-title"
      className={cn(
        "col-start-2 min-h-5 font-head text-base leading-tight tracking-tight [&_a]:underline [&_a]:underline-offset-3",
        className
      )}
      {...props}
    />
  )
}

function AlertDescription({
  className,
  ...props
}: React.ComponentProps<"div">) {
  return (
    <div
      data-slot="alert-description"
      className={cn(
        "col-start-2 grid justify-items-start gap-1 text-sm [&_a]:underline [&_a]:underline-offset-3 [&_a]:hover:text-foreground [&_p]:leading-relaxed [&_p:not(:last-child)]:mb-4",
        className
      )}
      {...props}
    />
  )
}

function AlertAction({ className, ...props }: React.ComponentProps<"div">) {
  return (
    <div
      data-slot="alert-action"
      className={cn("absolute top-2 right-2", className)}
      {...props}
    />
  )
}

export { Alert, AlertTitle, AlertDescription, AlertAction, alertVariants }

Update the import paths to match your project setup.

Usage

import {
  Alert,
  AlertAction,
  AlertDescription,
  AlertTitle,
} from "@/components/ui/alert"
<Alert>
  <InfoIcon />
  <AlertTitle>Heads up!</AlertTitle>
  <AlertDescription>
    You can add components and dependencies to your app using the cli.
  </AlertDescription>
  <AlertAction>
    <Button variant="outline">Enable</Button>
  </AlertAction>
</Alert>

Composition

Use the following composition to build an Alert:

Alert
├── Icon
├── AlertTitle
├── AlertDescription
└── AlertAction

Examples

Basic

A basic alert with an icon, title and description.

import { CheckCircle2Icon } from "lucide-react"

import {

Destructive

Use variant="destructive" to create a destructive alert.

import { AlertCircleIcon } from "lucide-react"

import {

Action

Use AlertAction to add a button or other action element to the alert.

import {
  Alert,
  AlertAction,

Custom Colors

You can customize the alert colors by adding custom classes such as bg-amber-50 dark:bg-amber-950 to the Alert component.

import { AlertTriangleIcon } from "lucide-react"

import {

RTL

To enable RTL support in Neobrutalism.com, see the RTL configuration guide.

"use client"

import * as React from "react"

Accessibility

The alert root renders role="alert", an implicit assertive live region: screen readers announce its content the moment it is inserted into the DOM. The announcement only fires on dynamic insertion — an alert already present at page load is read as ordinary text, so render it conditionally when it should be heard. role="alert" never moves focus; if the user must respond before continuing, use an alert dialog instead, and treat AlertAction as a shortcut rather than the only way forward.

API Reference

Alert

The Alert component displays a callout for user attention.

PropTypeDefault
variant"default" | "destructive" | "solid""default"
status"error" | "success" | "warning" | "info"-

status is additive: it overrides the active variant's colors when set.

AlertTitle

The AlertTitle component displays the title of the alert.

PropTypeDefault
classNamestring-

AlertDescription

The AlertDescription component displays the description or content of the alert.

PropTypeDefault
classNamestring-

AlertAction

The AlertAction component displays an action element (like a button) positioned absolutely in the top-right corner of the alert.

PropTypeDefault
classNamestring-