body {
  min-width: 1050px;
  height: 100%;
  overflow-x: hidden;
  background: #424242;
  margin: 0 auto;
}
.nav {
  width: 100%;
  height: 92px;
  background: #1b1b1b;
  border-bottom: 2px solid #9a030a;
}
.nav_box {
  width: 1050px;
  height: 93px;
  margin: 0 auto;
}
.nav_box_left {
  width: 128px;
  height: 86px;
  background: url('../img/logo.png') no-repeat;
  background-size: 100% 100%;
  float: left;
  /* margin-left: 80px; */
}
.nav_box_left_17uxi {
  width: 168px;
  height: 66px;
  background: url(17uxi.logo.png) no-repeat;
  background-size: 100% 100%;
  float: left;
  margin: 13px 30px 0;
  /* margin-left: 80px; */
}
.nav_box_right,
.nav_box_right_ul {
  width: 680px;
  height: 100%;
  float: right;
}
.nav_box_right_ul li {
  width: 170px;
  height: 100%;
  display: table;
  color: #545454;
  float: left;
}
.nav_box_right_ul li a {
  display: block;
  color: #545454;
  text-decoration: none;
}
.nav_box_right_ul .active a {
  width: 170px;
  height: 100%;
  background: #9a030a;
  color: #fff;
  display: table;
  text-decoration: none;
}
.nav_box_right_ul li a .nav_head {
  width: 100%;
  height: 22px;
  text-indent: 10px;
  line-height: 22px;
  margin-top: 30px;
}
.nav_box_right_ul li a .nav_con {
  width: 100%;
  height: 22px;
  text-indent: 10px;
  line-height: 22px;
  letter-spacing: 4px;
}
/*banner*/
.banner {
  width: 100%;
  height: 510px;
  background: #030303;
  position: relative;
}
.banner_bg {
  width: 100%;
  height: 510px;
  background: url('../img/banner_bg.png') no-repeat center top;
  margin: 0 auto;
}
/*标题*/
.common_head {
  width: 100%;
  height: 50px;
  position: relative;
  color: #fff;
  z-index: 10;
}
.common_head_title {
  width: 100px;
  height: 30px;
  text-align: center;
  line-height: 30px;
  font-size: 24px;
  position: absolute;
  bottom: 2px;
  left: 16px;
}
.common_head_Stitle {
  width: 150px;
  height: 18px;
  text-indent: 10px;
  line-height: 18px;
  font-size: 12px;
  position: absolute;
  bottom: 2px;
  left: 116px;
}