<div style={{
    flex: 1,
    flexDirection: 'column',
    justifyContent: 'center',
  }}>
    <div style={{width: 50, height: 50, backgroundColor: 'powderblue'}} />
    <div style={{width: 50, height: 50, backgroundColor: 'skyblue'}} />
    <div style={{width: 50, height: 50, backgroundColor: 'steelblue'}} />
  </div>