header

class Header {
  ...
  //Builds navigation links at the right top of landing page
  Widget buildHeaderLinks(BuildContext context) {
    if (!ResponsiveWidget.isSmallScreen(context))
      return Row(
        mainAxisAlignment: MainAxisAlignment.spaceAround,
        children: getLinksListing()..add(buildLoginButton()),
      );
    else
      return Image.network("assets/menu.png", width: 25, height: 25);
  }
  ...
}