body::before {
  content: 'mobile';
  display: none; }
  @media (min-width: 48em) {
    body::before {
      content: 'mobile-lg'; } }
  @media (min-width: 64em) {
    body::before {
      content: 'tablet'; } }
  @media (min-width: 75em) {
    body::before {
      content: 'desktop'; } }
  @media (min-width: 1600px) {
    body::before {
      content: 'xl-desktop'; } }