engine/app/assets/javascripts/locomotive/utils/growl.js

$.growl.settings.noticeTemplate = '' +
  '<div class="notice %title%">' +
  '  <p>%message%</p>' +
  '</div>';

$.growl.settings.dockCss = {
  position: 'fixed',
  bottom: '20px',
  left: '0px',
  width: '100%',
  zIndex: 50000
};