header.mobile-sptop {
  display: none;
}

@media (max-width: 757px) {
  body.theme-sptop header.pc {
    display: none !important;
  }

  body.header-sptop header.mobile-sptop {
    display: block;
  }
}

@media (min-width: 758px) {
  body.header-sptop header.mobile-sptop {
    display: none !important;
  }
}