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website/node_modules/@mui/material/Backdrop/backdropClasses.d.ts

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+export interface BackdropClasses {
+  /** Styles applied to the root element. */
+  root: string;
+  /** Styles applied to the root element if `invisible={true}`. */
+  invisible: string;
+}
+export type BackdropClassKey = keyof BackdropClasses;
+export declare function getBackdropUtilityClass(slot: string): string;
+declare const backdropClasses: BackdropClasses;
+export default backdropClasses;