#main_header {
  background:url(../images/management/header_bg.jpg) top center no-repeat;
}
.header_textbox{
  padding: 45px;
}

#case{
  background: url(../images/management/case_bg.jpg) top center no-repeat;
}
.main_list.case{
  height: 480px;
}
.main_list.case > ul li{
  min-height: 430px;
}
.main_list.case > ul li > .i03{
  left: 0;
}
.main_list.case > ul li > .i04{
  left: 20px;
}
.main_list > ul li .c05{
  top: 330px;
}
.main_list > ul li .t05{
  top: 377px;
}
.main_list > ul li .c06{
  top: 330px;
}
.main_list > ul li .t06{
  top: 377px;
}

@media screen and (min-width: 1024px) {
  .header_img {
    right: 50px;
  }
}

@media screen and (max-width: 1023px) and (min-width: 601px) {
  #main_header {
    -webkit-background-position: left center !important;
            background-position: left center !important;
  }
  #case .img {
    height: 26vw;
  }
  .main_list.case > ul li > .casetext01 {
    top: 25vw;
    left: 6vw;
  }
  .main_list.case > ul li > .casetext02 {
    top: 18.5vw;
    left: 24vw;
  }
}

@media screen and (max-width: 600px) {
  #main_header {
    background-image: url('../images/management_sp/header_bg.png');
  }
}