header.index-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 99;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.4) 100%);
}
html body .gallery-wrap {
  height: 720px;
}
html body .index-header .top-nav .top-nav-list ul li a {
  color: #fff;
}