.header {
  width: 100%;
  min-width: 1200px;
  background: url(nh-banner-3.png) no-repeat center;
  background-size: cover;
  height: 570px;
}
.header-box {
  height: 472px;
}
.tjzw-logo {
  margin-right: 30px;
}
.container {
  width: 1200px !important;
  margin: 0 auto;
  box-sizing: border-box;
  padding-top: 10px;
}
.language {
  width: 100%;
  display: flex;
  justify-content: space-between;
}
.left,
.right {
  color: #fff;
  font-size: 20px;
}
.left,
.tjzw-logo {
  vertical-align: middle;
}
.search-container {
  display: inline-block;
  margin: 0 auto;
  margin-top: 20px;
}
.search-container .search-box {
  display: flex;
  flex-wrap: nowrap;
  width: 620px;
  height: 75px;
}
.search-container .searc-input {
  width: 520px;
  height: 100%;
  font-size: 22px;
  padding-left: 25px;
}
.search-container .searc-btn {
  flex: 1;
  background-color: #115DB2;
  font-size: 21px;
  color: #fff;
}
.search-container .searc-input::-webkit-input-placeholder {
  color: #7E7F80;
}
.search-container .searc-input:-ms-input-placeholder {
  color: #7E7F80;
}
.search-container .searc-input::-ms-input-placeholder {
  color: #7E7F80;
}
.nav_main {
  width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
  margin-left: 20px;
}
.nav_main > li:last-child {
  margin-right: 0;
}
.nav_main > li {
  font-size: 20px;
  color: #fff;
  position: relative;
  margin: 0 20px;
  height: 60px;
  opacity: 0.9;
}
.nav_main > li > a {
  height: 100%;
  font-size: 22px;
  letter-spacing: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav_main > li > a img {
  margin-right: 5px;
}
.nav_main > li.on {
  opacity: 1;
}
.nav_main > li.on > a {
  font-weight: 600;
}
.nav_main > li.on::after {
  content: "";
  display: block;
  width: 50%;
  height: 6px;
  background-color: #fff;
  position: absolute;
  bottom: 0;
  margin: auto;
  right: 0;
  left: 0;
  border-radius: 6px;
}
.nav_next {
  width: 100%;
  text-align: center;
  margin-top: 10px;
}
.nav_next > li {
  display: inline-block;
  margin-right: 47px;
}
.nav_next > li a {
  color: #9cd3fd;
  font-size: 16px;
}
.nhVavSlide {
  margin-top: 75px;
}
.index_main {
  width: 100%;
  min-width: 1200px;
  margin-top: 26px;
  background: url(top_nav.png) no-repeat center;
  background-size: cover;
  padding-top: 100px;
  box-sizing: border-box;
  padding-bottom: 26px;
}

@media screen and (max-width: 1200px){
  .header{
    background-image: url(nh-moblie-banner-2.png) !important;
    background-repeat: no-repeat;
  }
}