Full-width notice with a message, supporting content, actions, and dismissal.
JSX owns the light-DOM regions and ARIA. External CSS renders the layout before
registration; the browser element owns visibility through ElementInternals.
dismissed controls visibility. onDismiss requests dismissal without applying
it in controlled mode. defaultDismissed seeds uncontrolled visibility once.
Granular dismissal also requires @antadesign/anta/elements/a-button and the
close icon requires @antadesign/anta/elements/a-icon.
Full-width notice with a message, supporting content, actions, and dismissal. JSX owns the light-DOM regions and ARIA. External CSS renders the layout before registration; the browser element owns visibility through ElementInternals.
dismissedcontrols visibility.onDismissrequests dismissal without applying it in controlled mode.defaultDismissedseeds uncontrolled visibility once. Granular dismissal also requires@antadesign/anta/elements/a-buttonand the close icon requires@antadesign/anta/elements/a-icon.