TextField("Insert Name", text: $nameInput)
   .textFieldStyle(.roundedBorder)
   .padding(4)
   .background(focusName == .name ? Color(white: 0.9) : .white)
   .focused($focusName, equals: .name)
   .onChange(of: nameInput, initial: false) { old, value in
      if value.count > 10 {
         nameInput = String(value.prefix(10))
      }
   }
TextField("Insert Surname", text: $surnameInput)
   .textFieldStyle(.roundedBorder)
   .padding(4)
   .background(focusName == .surname ? Color(white: 0.9) : .white)
   .focused($focusName, equals: .surname)
   .onChange(of: surnameInput, initial: false) { old, value in
      if value.count > 15 {
         surnameInput = String(value.prefix(15))
      }
   }