.bannerbox {
  height: 750px;
  position: absolute;
  top: 0;
  z-index: 8;
}
.bannerbox .banner {
  position: relative;
  width: 100%;
  height: 750px;
  overflow: hidden;
  margin: 0 auto;
}
.bannerbox .banner .bannerContent {
  position: relative;
}
.bannerbox .banner .bannerContent .banner_item {
  display: none;
  transition-duration: 0.2s;
  transition-property: opacity;
  transition-timing-function: ease;
}
.bannerbox .banner .bannerContent .banner_item a {
  display: block;
  width: 100%;
  height: 750px;
  text-align: center;
  margin: 0 auto;
}
.bannerbox .banner .bannerContent .banner_active {
  display: block;
}
.bannerbox .banner .bannerContent .banner_active a {
  background-repeat: no-repeat;
  background-position: center;
  background-size: auto 100%;
}
.bannerbox .banner .navigator {
  position: absolute;
  bottom: 25px;
  width: 100%;
}
.bannerbox .banner .navigator .navigator_list {
  width: 40%;
  text-align: center;
  margin: auto;
  font-size: 0;
  position: relative;
}
.bannerbox .banner .navigator .navigator_list .navigator_item {
  display: inline-block;
  margin-left: 15px;
  width: 60px;
  height: 8px;
  line-height: 8px;
  background: #fff;
  opacity: 1;
  border-radius: 4px;
  text-align: center;
  cursor: pointer;
  *display: inline;
}
.bannerbox .banner .navigator .navigator_list .navigator_item_active {
  opacity: 0.6;
  background: #fff;
  position: relative;
}