/* 顶部banner蒙版 */
#page-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.35);
  z-index: 1;
}
#page-header .page-header-title {
  z-index: 2;
  position: relative;
}
#page-header {
  transition: background-image 1.2s ease-in-out;
}