/* 表示・非表示 */
@media only screen and (min-width: 901px) {
   /* --- スライドショー画像（赤羽） --- */
  .background .slide1-ik { 
    background-image: url('../images/slidebox/ttl_jicik_01.jpg');
  }
  .background .slide2-ik { 
    background-image: url('../images/slidebox/ttl_jicik_02.jpg');
  }
  .background .slide3-ik { 
    background-image: url('../images/slidebox/ttl_jicik_03.jpg');
  }
  .background .slide4-ik { 
    background-image: url('../images/slidebox/ttl_jicik_04.jpg');
  }
  .background .slide5-ik { 
    background-image: url('../images/slidebox/ttl_jicik_05.jpg');
  }
}

@media only screen and (max-width: 900px) {
/* --- スライドショー画像（赤羽） --- */
.background .slide1-ik { background-image: url('../images/slidebox/ttl_jicik_sp_01.jpg'); }
.background .slide2-ik { background-image: url('../images/slidebox/ttl_jicik_sp_02.jpg'); }
.background .slide3-ik { background-image: url('../images/slidebox/ttl_jicik_sp_03.jpg'); }
.background .slide4-ik { background-image: url('../images/slidebox/ttl_jicik_sp_04.jpg'); }
.background .slide5-ik { background-image: url('../images/slidebox/ttl_jicik_sp_05.jpg'); }
}