.s_item1{
  background-image: url(cupboard_main01.png);
  background-size:cover;
  background-position: center;
}
.s_item2{
  background-image: url(cupboard_main02.png);
  background-size:cover;
  background-position: center;
}
.s_item3{
  background-image: url(cupboard_main03.png);
  background-size:cover;
  background-position: center;
}