The Text input is center aligned, how to fix this text input so that it takes input from top left corner

Here is my css for text input:

 /* The Text input is center aligned, how to fix this text input so that it takes input from top left corner */

input: {
    flex: 1,
    padding: 4,
    marginRight: 1,
    marginTop: 5,
    fontSize: 18,
    borderWidth: 1,
    borderRadius: 4,
    borderColor: '#E6E5ED',
    backgroundColor: '#F8F8F9',
    justifyContent: 'flex-start',
    height: 150
}