header {
  justify-content: center;
}
header img {
  vertical-align: middle;
}
@media (min-width: 1025px) {
  .main {
    background-image: url(../img/mv_person01.png), url(../img/mv_person02.png?202604), url(../img/mv_kyozai01.png), url(../img/mv_children.png), url(../img/mv_bg.jpg);
  }
}
@media (min-width: 641px) and (max-width: 1024px) {
  .main {
    background-image: url(../img/mv_person01.png), url(../img/mv_person02.png?202604), url(../img/mv_kyozai01.png), url(../img/mv_children.png), url(../img/mv_bg.jpg);
  }
}