html body {
  background: #0d1717;
  position: relative;
  height: 100vh;
  overflow-y: scroll;
}

.container {
  width: 1200px;
  margin: 0 auto;
}
/************** banner图 **************/
.banner {
  position: relative;
}
.banner img {
  width: 100%;
}
.banner .banner-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.5);
}
.banner .fixed {
  position: fixed;
  top: 0;
  bottom: auto;
  z-index: 999;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.8);
}
.banner .banner-bottom ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.banner .banner-bottom ul li {
  padding: 5px 0 0;
}
.banner .banner-bottom a {
  color: #59f5f2;
  font-size: 22px;
  font-weight: 600;
  font-style: italic;
  border-bottom: 4px solid transparent;
  line-height: 1.5;
  display: inline-block;
  padding: 5px;
}
.banner .banner-bottom a:focus,
.banner .banner-bottom .active a,
.banner .banner-bottom a:hover {
  text-decoration: none;
  color: #59f5f2;
  background: rgba(0, 0, 0, 0.5);
  border-color: #59f5f2;
  border: none;
  border-bottom: 4px solid #59f5f2;
}

.banner .nav-tabs {
  border: none;
}
/************** 内容 **************/
.content {
  padding-bottom: 50px;
}
.content-item {
  padding-top: 30px;
}
.content-item .item-box {
  margin-top: 100px;
}
.content-item .item {
  border: 3px solid #59f5f2;
  border-radius: 32px;
  position: relative;
  /* margin-top: 50px; */
  width: 960px;
  margin: 0 auto;
  padding-top: 30px;
}
.content-item .title {
  width: 400px;
  margin: 0 auto;
  padding: 60px 40px 0;
}
.content-item .title img {
  width: 100%;
}

.content-item .item-title {
  position: absolute;
  top: 0;
  left: 50%;
  width: 280px;
  translate: -50% -50%;
}
.content-item .item-title img {
  width: 100%;
}

.item .item-content {
  display: flex;
  font-size: 28px;
  align-items: center;
  color: #fff;
  text-align: center;
  padding: 30px 30px 10px;
}
.item-box:nth-child(2n + 1) .item-content {
  flex-direction: row-reverse;
}

.item .item-content .item-left {
  flex: 1;
  box-sizing: border-box;
  padding-right: 30px;
}
.item .item-content img {
  width: 250px;
  margin: 0;
}
.item .item-content .detail {
  font-size: 24px;
  padding-top: 10px;
}
/*********** 底部 ***********/
.footer {
  background-color: #393b3b;
  padding: 50px 0 33px;
  font-size: 14px;
  color: #cdcdcd;
}
.footer-bottom {
  text-align: center;
  margin-top: 48px;
}
.footer a {
  color: #cdcdcd;
  cursor: pointer;
}
.footer a:hover {
  color: #818282;
}
.footer-content {
  display: flex;
}

.footer .logo-item {
  flex: 1;
}
.footer-right {
  flex: 2;
  display: flex;
  justify-content: space-between;
}
.footer-logo img {
  width: 160px;
}
.footer .icon-box > div img,
.footer .icon-box > a img {
  width: 18px;
  height: 18px;
}
.footer .icon-box {
  display: flex;
  padding-top: 30px;
  position: relative;
}
.footer .icon-box > div,
.footer .icon-box > a {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 19px 19px;
  margin-right: 24px;
  padding: 8px;
  line-height: 15px;
  color: #999999;
}
.footer .code-box .code {
  position: absolute;
  width: 113px;
  left: -1px;
  top: -109px;
  height: 162px;
  display: none;
}
.footer .code-box:hover .code {
  display: block;
  cursor: pointer;
}
.footer-right-item a {
  display: block;
}
.footer-right .footer-right-item .footer-item-title {
  font-size: 16px;
  padding-left: 26px;
  background: url(./images/footer1.png) left center no-repeat;
  background-size: 25px 25px;
  margin-bottom: 30px;
  color: #fff;
}
.footer-right .footer-right-item .footer-item-title.jf {
  background-image: url(./images/footer2.png);
}
.footer-right .footer-right-item .footer-item-title.serve {
  background-image: url(./images/footer3.png);
}
.footer-right .footer-right-item > div,
.footer-right .footer-right-item > a {
  padding-left: 26px;
  margin-bottom: 10px;
}
@media screen and (max-width: 960px) {
  .container {
    width: 100%;
  }
  .banner .banner-bottom a {
    font-size: 16px;
  }
  .content-item .item {
    width: 90%;
  }
  .content-item .item-title {
    width: 200px;
  }
  .item .item-content {
    font-size: 14px;
  }
  .item .item-content .detail {
    font-size: 13px;
  }
  .item .item-content .item-left {
    flex: 2;
  }
  .item .item-content .item-right {
    flex: 1;
  }
  .item .item-content img {
    width: 100%;
  }
  .content-item .title {
    width: 80%;
  }
  .banner .banner-bottom ul {
    /* justify-content: flex-start; */
    display: none;
  }
  .content-item .item-box {
    margin-top: 40px;
  }
  .item .item-content {
    padding: 15px 15px 10px;
  }
  .content-item .title {
    padding-top: 30px;
  }
  .banner {
    padding-bottom: 0px;
  }
  .footer-content {
    display: block;
  }
  .logo-item {
    text-align: center;
    margin-bottom: 30px;
  }
  .banner img {
    display: none;
  }
  .banner {
    height: 250px;

    background: url(./images/banner.png) center center no-repeat;
    /* background-size: contain; */
    background-size: 140% auto;
  }
  .icon-box {
    padding-left: 40px;
    padding-right: 40px;
    justify-content: space-around;
  }
}