relativeSize isn't adjusting HStack dimensions - swiftui

Question

When .relativeSize is called on HStack{}, the borders do not come closer. Indicative of dimensions not being adjusted.
I've already tried rearranging the sequence of method calls on HStack, such that .relativeSize is called before and after .frame and .border
struct ContentView : View {
var body: some View{
VStack(alignment: .center, spacing: 1){
//Top box holding a rectangle
HStack{
Text("Test")
}
.frame(width: 355, height: 99, alignment: .center)
.relativeSize(width: 0.95, height: 0.95)
.border(Color.blue, width: 2)
//Bottom box holding 3 recangles
HStack{
Text("Test")
}
.frame(width: 355, height: 47, alignment: .center)
.border(Color.red, width: 1)
}
.frame(width: 355, height: 148, alignment: .center)
.border(Color.black, width: 1)
//body paren
}
}

Answer 1

Simply add a Spacer() before and after the text, and remove the .frame() modifier. This way the HStack will expand laterally as much as 0.95 the size of the containing VStack. Is this what you want?
struct ContentView : View {
var body: some View{
VStack(alignment: .center, spacing: 1){
//Top box holding a rectangle
HStack{
Spacer()
Text("Test")
Spacer()
}
.relativeSize(width: 0.95, height: 0.95)
.border(Color.blue, width: 2)
//Bottom box holding 3 recangles
HStack{
Text("Test")
}
.frame(width: 355, height: 47, alignment: .center)
.border(Color.red, width: 1)
}
.frame(width: 355, height: 148, alignment: .center)
.border(Color.black, width: 1)
//body paren
}
}