.wrap {
  background: url("../img/bg.jpg") no-repeat top center #120707; }

.main_cont {
  width: 1280px;
  margin: 0px auto;
  position: relative; }

.main_ul {
  width: 1280px;
  overflow: hidden; }

.main_ul li {
  position: relative;
  float: left; }

.main_ul li img {
  display: block; }

.retrun_index {
  display: block;
  width: 115px;
  height: 30px;
  position: absolute;
  right: -18px;
  top: 15px;
  background: url(about:blank); }

.nav1 {
  display: block;
  width: 624px;
  height: 81px;
  position: absolute;
  left: 431px;
  top: 171px;
  background-image: url("../img/nav01.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav1:hover {
    background-position: -1058px 0px; }

.nav2 {
  display: block;
  width: 814px;
  height: 121px;
  position: absolute;
  left: 280px;
  top: 234px;
  background-image: url("../img/nav02.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav2:hover {
    background-position: -1050px 0px; }

.nav3 {
  display: block;
  width: 668px;
  height: 90px;
  position: absolute;
  left: 410px;
  top: 336px;
  background-image: url("../img/nav03.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav3:hover {
    background-position: -1110px 0px; }

.nav4 {
  display: block;
  width: 760px;
  height: 97px;
  position: absolute;
  left: 320px;
  top: 406px;
  background-image: url("../img/nav04.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav4:hover {
    background-position: -1005px 0px; }

.nav5 {
  display: block;
  width: 867px;
  height: 118px;
  position: absolute;
  left: 218px;
  top: 479px;
  background-image: url("../img/nav05.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav5:hover {
    background-position: -982px 0px; }

.nav10 {
  display: block;
  width: 864px;
  height: 109px;
  position: absolute;
  left: 62px;
  top: 1072px;
  background-image: url("../img/nav10.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav10:hover {
    background-position: -950px 0px; }
  .nav10.gray {
    background-image: url("../img/nav10_gray.png");
    background-position: -1058px 0px; }

.nav9 {
  display: block;
  width: 691px;
  height: 96px;
  position: absolute;
  left: 206px;
  top: 1000px;
  background-image: url("../img/nav09.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav9:hover {
    background-position: -1030px 0px; }
  .nav9.gray {
    background-image: url("../img/nav09_gray.png");
    background-position: -1058px 0px; }

.nav8 {
  display: block;
  width: 625px;
  height: 83px;
  position: absolute;
  left: 295px;
  top: 936px;
  background-image: url("../img/nav08.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav8:hover {
    background-position: -1060px 0px; }
  .nav8.gray {
    background-image: url("../img/nav08_gray.png");
    background-position: -1058px 0px; }

.nav7 {
  display: block;
  width: 812px;
  height: 123px;
  position: absolute;
  left: 12px;
  top: 837px;
  background-image: url("../img/nav07.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav7:hover {
    background-position: -960px 0px; }

.nav6 {
  display: block;
  width: 674px;
  height: 90px;
  position: absolute;
  left: 110px;
  top: 774px;
  background-image: url("../img/nav06.png");
  background-repeat: no-repeat;
  z-index: 10; }
  .nav6:hover {
    background-position: -1010px 0px; }

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