/* 电脑端首页顶部 Banner */
#page-header.full_page {
  background-image: url('/images/background-pc.jpg') !important;
}

/* 手机端（屏幕宽度 ≤ 768px）首页顶部 Banner */
@media screen and (max-width: 768px) {
  #page-header.full_page {
    background-image: url('/images/background-mobile.jpg') !important;
  }
}