@media (max-width: @maxphone)
{
  @import 'screen/head.less';
  @import 'screen/navigation-submenu.less';
  @import 'screen/footer-sticky.less';
  @import 'tablet/head.less';
  @import 'phone/typo.less';
  @import 'phone/layout.less';
  @import 'phone/head.less';
  @import 'phone/navigation.less';
  @import 'phone/footer.less';
}