#main .hope-top .mobile-image {
  background-image: url(https://www.mayoclinic.org/~/media/B3FE087E590340E1BFEF057730DB016A.jpg);
}
@media screen and (min-width: 768px) {
  #main .hope-top {
    background-image: url(https://www.mayoclinic.org/~/media/ACE88772C1FB4BF8BFFD55EDD38A605E.jpg);
  }
}