@media screen and (min-width:1850px) {
  html {
      font-size: 16px
  }
}

@media screen and (max-width:1850px) {
  html {
      font-size: 15.5px
  }
}

@media screen and (max-width:1800px) {
  html {
      font-size: 15px
  }
}

@media screen and (max-width:1750px) {
  html {
      font-size: 14.6px
  }
}

@media screen and (max-width:1700px) {
  html {
      font-size: 14.1px
  }
}

@media screen and (max-width:1650px) {
  html {
      font-size: 13.8px
  }
}

@media screen and (max-width:1600px) {
  html {
      font-size: 13.4px
  }
}

@media screen and (max-width:1550px) {
  html {
      font-size: 13px
  }
}

@media screen and (max-width:1500px) {
  html {
      font-size: 12.6px
  }
}

@media screen and (max-width:1450px) {
  html {
      font-size: 12.2px
  }
}

@media screen and (max-width:1400px) {
  html {
      font-size: 11.6px
  }
}

@media screen and (max-width:1350px) {
  html {
      font-size: 11px
  }
}

@media screen and (max-width:1300px) {
  html {
      font-size: 10.8px
  }
}

@media screen and (max-width:1250px) {
  html {
      font-size: 10.6px
  }
}

@media screen and (max-width:1200px) {
  html {
      font-size: 10.4px
  }
}

@media screen and (max-width:1150px) {
  html {
      font-size: 10.2px
  }
}

@media screen and (max-width:1100px) {
  html {
      font-size: 10px
  }
}

@media screen and (max-width:1050px) {
  html {
      font-size: 9.8px
  }
}

@media screen and (max-width:1000px) {
  html {
      font-size: 9.6px
  }
}

@media screen and (max-width:950px) {
  html {
      font-size: 9.4px
  }
}

@media screen and (max-width:900px) {
  html {
      font-size: 9px
  }
}

@media screen and (max-width:760px) {
  html {
      font-size: 8px
  }
}

.main .title {
  height: 200px;
  width: 100%;
  background: #000f21;
}
.main .title .title-box {


  display: flex;
  justify-content: center;
  align-items: center;
  height: 200px;
  box-sizing: border-box;
}
.main .title .title-box h2 {
  font-size: 60px;
  font-family: Microsoft YaHei, Microsoft YaHei-Regular;
  font-weight: 400;
  text-align: left;
  color: #ffffff;
  letter-spacing: 2px;
  margin-right: 30px;
}
.main .title .title-box h4 {
  font-size: 30px;
  font-family: Microsoft YaHei, Microsoft YaHei-Regular;
  font-weight: 400;
  text-align: left;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 1px;
  padding-top: 15px;
}
.main .select-title {
  width: 53.33%;
  margin: 40px auto;
  border-bottom: 1px solid rgba(232, 232, 232, 0.8);
  display: flex;
  justify-content: space-between;
}
.main .select-title .item {
  flex: 1;
  text-align: center;
}
.main .select-title .item a {
  display: block;
  width: 60%;
  margin: 0 auto;
  font-size: 18px;
  font-family: Microsoft YaHei, Microsoft YaHei-Regular;
  font-weight: 400;
  text-align: left;
  color: #030000;
  text-align: center;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(0, 0, 0, 0);
  opacity: 0.5;
}
.main .select-title .item a:hover {
  opacity: 1;
}
.main .select-title .active {
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.8);
}
.main .select-title .active a {
  opacity: 1;
}
.main .container-box {
  width: 75.52%;
  margin: 0 auto;
  display: flex;
  overflow: hidden;
}
.main .container-box .container {
  min-width: 100%;
  width: 100%;
  float: left;
  box-sizing: border-box;
  transition: all 0.3s;
}
.main .container-box .container .content-box {
  box-sizing: border-box;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.main .container-box .container .content-box .item {
  margin-bottom: 60px;
  box-sizing: border-box;
  width: 31%;
}
.main .container-box .container .content-box .item .img img {
  width: 100%;
  box-sizing: border-box;
}
.main .container-box .container .content-box .item h5 {
  font-size: 18px;
  font-family: Microsoft YaHei, Microsoft YaHei-Regular;
  font-weight: 400;
  text-align: left;
  color: #000000;
  line-height: 28px;
  padding: 26px 0;
  box-sizing: border-box;
}
.main .container-box .container .content-box .item span {
  display: block;
  font-size: 14px;
  font-family: Microsoft YaHei, Microsoft YaHei-Regular;
  font-weight: 400;
  text-align: left;
  color: #565656;
  padding-bottom: 23px;
}
.main .container-box .container .content-box .item .content {
  font-size: 14px;
  font-family: Microsoft YaHei, Microsoft YaHei-Regular;
  font-weight: 400;
  text-align: left;
  color: #565656;
  line-height: 28px;
}
.main .container-box .container .content-box .item:last-of-type {
  height: 0;
  opacity: 0;
}
.main .container-box .container .page {
  display: flex;
  justify-content: center;
  margin: 73px auto 104px;
}
.main .container-box .container .page ul {
  display: flex;
}
.main .container-box .container .page ul li {
  margin: 0 5px;
}
.main .container-box .container .page ul li a {
  display: inline-block;
  border: 1px solid #929292;
  padding: 12px 14px;
  font-size: 14px;
  font-family: Microsoft YaHei, Microsoft YaHei-Regular;
  font-weight: 400;
  text-align: left;
  color: #565656;
  transition: all 0.3s;
}
.main .container-box .container .page ul li a:hover {
  background-color: rgba(0, 0, 0, 0.8);
  transition: all 0.3s;
  color: #fff;
}
@media screen and (max-width: 750px) {
  .main{
    margin-top: 70px;
  }
  .main .title {
    height: auto;
  }
  .main .title .title-box {
    padding: 30px 0;
    padding-left: 0;
    flex-direction: column;
    height: auto;
  }
  .main .title .title-box h2 {
    font-size: 30px;
  }
  .main .select-title {
    flex-direction: column;
  }
  .main .select-title .item {
    padding-bottom: 8px;
    border-bottom: none;
  }
  .main .select-title .active {
    padding-bottom: 8px;
    border-bottom: none;
  }
  .main .container-box .container .content-box .item {
    width: 100%;
  }
  .main .container-box .container .page {
    flex-wrap: wrap;
  }
  .main .container-box .container .page ul {
    flex-wrap: wrap;
  }
  .main .container-box .container .page ul li {
    margin-top: 20px;
  }
}