Button
Tactile native actions with clear variants. CSS only
<button class="ui-button" type="button">Publish component</button>Install
import '@timelessui/components/css/tokens.css'import '@timelessui/components/css/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, 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.
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.