import { LitElement, PropertyValueMap } from 'lit';
export declare class CustomDropdown extends LitElement {
    open: boolean;
    shown: boolean;
    protected willUpdate(_changedProperties: PropertyValueMap<any> | Map<PropertyKey, unknown>): void;
    static styles: import("lit").CSSResult[];
    show(): void;
    hide(): void;
    render(): import("lit-html").TemplateResult<1>;
}