.main_footer {
  background-size: cover;
  background-position: center;
  background-image: url("../../img/3128132/footer_3128132.jpg");
}

@media (max-width: 768px){
  .main_footer {
    background-size: cover;
    background-position: 50% 0%;
    background-image: url("../../img/3128132/footer_3128132_sp.jpg");
  }
}