Style in React Js

import { StyleSheet, Text, View } from 'react-native'
import React from 'react'

const App = () => {
  return (
    <View >
      <Text style={styles.textbox}>App</Text>
    </View>
  )
}

export default App

const styles = StyleSheet.create({
  textbox:{
    fontSize:40,
    backgroundColor:'red',
    marginLeft:20,
    borderRadius:10,
    textAlign:'center'

  }
})