export default class Preview extends Component {

  componentDidUpdate(prevProps) {
    this.layer1.style.backgroundImage = `url(${prevProps.preImg})`;
  }

  render() {
    const {bgImg} = this.props;
      return (
        <div className="screen">
          <div
            className="layer layer-1"
            ref={layer1 => (this.layer1 = layer1)}
          />
            <div key={preTitle}  className="layer layer-2 anim-fade"
                style={{backgroundImage: `url(${bgImg})`}}
              />
        </div>
      );

  }
}