AppNavigator.js

import * as React from 'react';
import { View, Text } from 'react-native';
import { NavigationContainer } from '@react-navigation/native';
import { createNativeStackNavigator } from '@react-navigation/native-stack';

export default function home({navigation}) {
    return (
      <View style={styles.container}>
        
        <View style={styles.header}>
          <Text style={styles.paragraph}>
          My Home.
          </Text>
        </View>
      </View>
    );
  }
  
  const styles = StyleSheet.create({
    container: {
      flex: 1,
      backgroundColor: '#ecf0f1',
      
    },
    header:{
      flex : 0.1,
      backgroundColor: 'pink',
      justifyContent: 'center',
      
    },
    center:{
      flexDirection : "column",
      flex : 0.8,
      backgroundColor: 'orange',
      
      
    },
  
    floor1:{
      flexDirection : "row",
      flex : 1,
      backgroundColor: '#f56642',
      justifyContent: 'center',
      
    },
    floor2:{
      flexDirection : "row",
      flex : 1,
      backgroundColor: '#f5c542',
      justifyContent: 'center',
      
    },
    floor3:{
      flexDirection : "row",
      flex : 1,
      backgroundColor: '#f56642',
      justifyContent: 'flex-start',
      
    },
    room:{
      
      flex : 1,
      backgroundColor: 'white',
      justifyContent: 'center',
      borderColor: 'black',
      borderWidth: 1,
      borderRadius: 20,
      margin: 10,
      
    },
    addroom: {
      
      flex : 0.5,
      backgroundColor: 'white',
      justifyContent: 'center',
      borderColor: 'black',
      borderWidth: 1,
      borderRadius: 20,
      margin: 10,
      
    },
    bottom:{
      flex : 0.1,
      backgroundColor: 'pink',
      justifyContent: 'center',
      
    },
    paragraph: {
      
      fontSize: 18,
      fontWeight: 'bold',
      textAlign: 'center',
      
    }, 
    button: {
      flex : 1,
      alignItems: "center",
      backgroundColor: "#DDDDDD",
      borderRadius: 20,
      borderColor: 'black',
      justifyContent: 'center',
      
    },
  });