SwiftUI 调整 View 在 Stack 中的高度或者宽度占比

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack(spacing: 0) {
            Rectangle()
                .fill(Color.red)
                .containerRelativeFrame(.vertical, count: 100, span: 43, spacing: 0)

            Rectangle()
                .fill(Color.green)
                .containerRelativeFrame(.vertical, count: 100, span: 37, spacing: 0)

            Rectangle()
                .fill(Color.yellow)
        }
    }
}

// 43:37:20