Alert

Communicate status without replacing native live-region semantics. CSS only

Alert

Copy this markup

<section class="ui-alert" data-ui-variant="success" role="status">

  <div data-ui-part="content">
    <h2 data-ui-part="title">Package published</h2>
    <p data-ui-part="description">The component is available to downstream apps.</p>

  </div>
</section>

Install

Styles and registration

import '@timelessui/components/css/tokens.css'
import '@timelessui/components/css/alert.css'
import '@timelessui/components/css/link.css'

Anatomy

Parts are authored in your own markup and identified by the selector below, so your CSS can target the same anatomy without loading Timeless styles. Required parts must be present for the component to work. Private data-ui-internal-* hooks are written by the runtime and must never be authored.

Part	Required	Selector	Purpose
icon	No	[data-ui-part~='icon']	Decorative status icon. Mark it aria-hidden="true".
content	No	[data-ui-part~='content']	Wrapper for the title and description.
title	No	[data-ui-part~='title']	Short summary line.
description	No	[data-ui-part~='description']	Supporting detail.
actions	No	[data-ui-part~='actions']	Container for one or two follow-up actions.

Attributes

Every value below is implemented by the stylesheets this component ships. Boolean attributes are presence-based: author the attribute with no value, or omit it.

Attribute	Values	Default	Description
data-ui-variant	neutral · accent · success · warning · danger	neutral	Status intent. This is styling only — set role="status" or role="alert" yourself to control how assistive technology announces the message.
data-ui-density	compact · normal	normal	Internal spacing.

Styling

Root identity: ui-alert. Required stylesheets: tokens.css, alert.css, link.css.

This component adds no custom properties of its own. Restyle it through the design tokens or your own CSS.

Design tokens this component reads (23)

These are global Atmosphere tokens. Change them once at the theme level rather than per component.

--ui-accent · --ui-accent-hover · --ui-accent-soft · --ui-bg-surface · --ui-danger · --ui-danger-soft · --ui-duration-fast · --ui-ease-standard · --ui-fg · --ui-fg-muted · --ui-focus · --ui-line · --ui-radius-lg · --ui-radius-xs · --ui-space-1 · --ui-space-2 · --ui-space-3 · --ui-space-4 · --ui-space-5 · --ui-success · --ui-success-soft · --ui-warning · --ui-warning-soft

Accessibility

Keep the native elements, roles, and relationships shown in the example. Timeless adds only the state and keyboard coordination the platform does not already provide, and it never supplies your accessible names — those depend on your content.

Before JavaScript runs

This primitive is CSS only. There is nothing to register and nothing to wait for.

More examples

Open Alert in StoryLite for variants, controls, and manual testing.