# presentationBackground(_:) Sets the presentation background of the enclosing sheet using a shape style. ``` nonisolated func presentationBackground(_ style: S) -> some View where S : ShapeStyle ``` ## Parameters `style` The shape style to use as the presentation background. ## Discussion The following example uses the [`thick`](/documentation/SwiftUI/Material/thick) material as the sheet background: ``` struct ContentView: View { @State private var showSettings = false var body: some View { Button("View Settings") { showSettings = true } .sheet(isPresented: $showSettings) { SettingsView() .presentationBackground(.thickMaterial) } } } ``` The `presentationBackground(_:)` modifier differs from the [`background(_:ignoresSafeAreaEdges:)`](/documentation/SwiftUI/View/background(_:ignoresSafeAreaEdges:)) modifier in several key ways. A presentation background: - Automatically fills the entire presentation. - Allows views behind the presentation to show through translucent styles on supported platforms. > Note: Sheet presentations on macOS do not support translucency > or transparency — the background is always opaque. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)