REACT-NATIVE - width: '100%' height : '100%' margin:'auto'

import {View,Text,Dimensions,Pressable,StyleSheet} from 'react-native';

const { width, height } = Dimensions.get("screen");

function Test() {
	return(
    <View style={{ alignItems: "center" }}>
    	<Pressable style={styles.Btn}>
        	<Text style={{textAlign: "center"}}>이건 버튼이다 </Text>
        </Pressable>
    </View>
    );
};

const styles =StyleSheet.create({
	Btn:{
    	width: width * 0.9,
    }
});
export default Test;