on osx SwiftUI ListRow has a 8px leading edges，how to remove it

Question

i set cell width 382px but only get a 365px

var body: some View {
    List() {
        HStack(){
            Text("what happen ")
        }.frame(width: 382,height: 101)
            .background(Color.yellow)
    }
    .background(Color.green)
    .frame(width: 382)
    .listStyle(PlainListStyle())
    .scrollContentBackground(.hidden)        
}

how to remove the leading and tailing 8px . i tried add a 8px padding tried change listRowInsets tried to change listStyle but noting work