@media screen and (min-width: 768px) {
  body {
    background-image: url(../img/bg/home.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: top;
    min-height: 95vh;
    background-attachment: fixed; }
    body#intro {
      background-image: url(../img/bg/instructions.jpg); }
    body#intro {
      background-image: url(../img/bg/instructions.jpg); }
    body#scenario-1 {
      background-image: url(../img/bg/scenario-1.jpg); }
    body#scenario-2 {
      background-image: url(../img/bg/scenario-2.jpg); }
    body#scenario-3 {
      background-image: url(../img/bg/scenario-3.jpg); }
    body#scenario-4 {
      background-image: url(../img/bg/scenario-4.jpg); }
    body#scenario-5 {
      background-image: url(../img/bg/scenario-5.jpg); }
    body#scenario-6 {
      background-image: url(../img/bg/scenario-6.jpg); }
    body#thank-you {
      background-image: url(../img/bg/thank-you.jpg); } }