.logo {
  .at2x(url("http://www.likeitfindit.com.au/wp-content/uploads/2015/06/LIFI_Logo-Menu-Retina.png"), 200px, 100px);
}
.teaser-logo {
  .at2x(url("http://www.likeitfindit.com.au/wp-content/uploads/2015/06/LIFI_Logo-White-800px.png"), 200px, 100px);
}