part of widgets; class Toolbar extends Component { List children; static final Style _style = new Style(''' display: flex; align-items: center; height: 84px; z-index: 1; background-color: ${Purple[500]}; color: white; box-shadow: ${Shadow[2]};''' ); Toolbar({String key, this.children}) : super(key: key); Node build() { return new Container( style: _style, children: children ); } }