Button

Tactile native actions with clear variants. CSS only

Button

Copy this markup

<button class="ui-button" type="button">Publish component</button>

Install

Styles and registration

import '@timelessui/components/css/tokens.css'
import '@timelessui/components/css/core/button.css'
import '@timelessui/components/css/themes/atmosphere/tokens.css'
import '@timelessui/components/css/themes/atmosphere/button.css'

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	primary · secondary · outline · ghost · danger · danger-outline · link	primary	Visual intent. Use primary for the main action in a view, secondary for neutral actions, outline when the action needs a stronger edge, ghost for low-emphasis toolbar actions, danger and danger-outline for destructive actions, and link for an action that should read as inline text.
data-ui-size	sm · md · lg	md	Control height, padding, and font size.

State

Native attributes, ARIA, and platform pseudo-classes are authoritative. Style state through the selectors below rather than adding your own state classes.

State	Source	How to express it
disabled	native	Native disabled, or aria-disabled on an anchor.

Styling

Root identity: ui-button. Required stylesheets: tokens.css, core/button.css, themes/atmosphere/tokens.css, themes/atmosphere/button.css.

Set these custom properties to restyle the component:

Custom property	Controls
--ui-button-bg	Resting background.
--ui-button-bg-hover	Hover background.
--ui-button-bg-active	Active background.
--ui-button-fg	Label color.
--ui-button-fg-hover	Hover label color.
--ui-button-border	Border color.
--ui-button-shadow	Resting shadow.
--ui-button-shadow-hover	Hover shadow.
--ui-button-shadow-active	Active shadow.
--ui-button-height	Minimum block size.
--ui-button-padding-x	Inline padding.
--ui-button-gap	Gap between icon and label.
--ui-button-radius	Corner radius.

Design tokens this component reads (20)

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

--ui-accent · --ui-bg-accent · --ui-bg-accent-active · --ui-bg-accent-hover · --ui-bg-control · --ui-bg-control-active · --ui-bg-control-hover · --ui-bg-control-muted · --ui-bg-danger · --ui-bg-danger-active · --ui-bg-danger-hover · --ui-duration-fast · --ui-ease-standard · --ui-fg · --ui-focus · --ui-radius-control · --ui-shadow-control-accent · --ui-shadow-control-active · --ui-shadow-control-danger · --ui-shadow-outline-control

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.

This component declares no keyboard contract, because it has none of its own: the markup above is native elements and native ARIA, and everything a keyboard or a screen reader does with it comes from the platform. Nothing here manages focus, and nothing here adds a role you did not author. So the accessibility of this component is the accessibility of the markup — which is why the markup is the part worth copying exactly.

Before JavaScript runs

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

More examples

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