@include sp {
  /* SP用の記述 */
}
@include pc {
  /* PC用の記述 */
}

@media only screen and (max-width: 959px) {
  /* SP */
  .container.bg-on {
    background-size: 25%;
  }

  body.backnumber a.ipg-backnumber__backnumberListItem--khaQ3:hover,
  body.backnumber .ipg-backnumber__backnumberListItem--khaQ3:hover {
    background-color: transparent;
    color: rgba(0, 0, 0, .870588);
  }
  body.backnumber a.ipg-backnumber__backnumberListItem--khaQ3:hover .ipg-backnumber__backnumberListItemSubtitle--16Q9l,
  body.backnumber .ipg-backnumber__backnumberListItem--khaQ3:hover .ipg-backnumber__backnumberListItemSubtitle--16Q9l{
    color: #455A64;
  }
  body.backnumber a.ipg-backnumber__backnumberListItem--khaQ3:hover .ipg-backnumber__backnumberListItemIcon--2P5TH,
  body.backnumber .ipg-backnumber__backnumberListItem--khaQ3:hover .ipg-backnumber__backnumberListItemIcon--2P5TH{
    fill: #455A64;
  }
}