import { CSSResultGroup, PropertyValues, TemplateResult } from 'lit';
import { SbbElement } from '../core/base-elements.ts';
export type SbbTitleLevel = '1' | '2' | '3' | '4' | '5' | '6';
/**
 * It displays a title with a heading role.
 */
export declare abstract class SbbTitleBase extends SbbElement {
    static role: string;
    static styles: CSSResultGroup;
    /** Title level */
    accessor level: SbbTitleLevel;
    /** Visual level for the title. */
    accessor visualLevel: SbbTitleLevel | null;
    protected willUpdate(changedProperties: PropertyValues<this>): void;
    protected render(): TemplateResult;
}
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