text: import React from 'react'
  import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider'
  import AppBar from 'material-ui/AppBar'
  import Tabs from './AppTabs'
  import AddCard from './CardAction'
  
  const App = () => (
    <MuiThemeProvider>
      <div>
        <AppBar title='Flashcard'/>
        <Tabs/>
        <AddCard/>
      </div>
    </MuiThemeProvider>
  )
  
  export default App
  