import SwiftUI

struct ContentView: View {
    @Environment(\.horizontalSizeClass) private var sizeClass
    @State private var note = ""

    var body: some View {
        let layout = sizeClass == .regular
            ? AnyLayout(HStackLayout(spacing: 24))
            : AnyLayout(VStackLayout(spacing: 24))

        layout {
            Text("Lab notes")
                .font(.title)
            TextField("One thing I learned", text: $note)
                .textFieldStyle(.roundedBorder)
        }
        .padding()
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}