text: import { createStackNavigator } from 'react-navigation'
  import CreateScreen from '../pages/sign/create'
  
  
  const CreateStack = createStackNavigator(
      {
          Create: CreateScreen,
      },
      {
          navigationOptions: {
              headerTransparent: true,
              headerStyle: {
                  // backgroundColor: '#f4511e',
              },
              headerTintColor: '#fff',
              headerTitleStyle: {
                  fontWeight: 'bold',
              },
              // headerTitle: '轻钱包',
              // header: null
          },
      }
  )
  
  
  export default CreateStack