*{
  margin: 0;
  padding: 0;
}
/* banner图 */
.banner{
  height: 80vh;
  background: url(../../images/DXLaboratory/banner.png) no-repeat;
  background-size:100% 100%;
}
.banner div{
  padding:30vh 0 0 15vw;
}
.banner div h2{
  width: 168x;
  height: 28px;
  font-size: 34px;
  font-weight: 400;
  line-height: 56px;
  color: #fff;
}
.banner div p{
  font-size: 18px;
  text-align: left;
  letter-spacing: 2px;
  font-family: SourceHanSansCN-Regular, SourceHanSansCN;
  color: #fff;
  padding-top: 50px;
}
/* route */
.route_box {
  height: 60px;
  background-color: #fff;
  display: flex;
  align-items: center;
  margin-left: 10%;
}
.route {
  display: flex;
  align-items: center;
}
/* nav */
.navbox {
  background: #7D8C9A;
}

.navbox .nav {
  height: 50px;
  width: 80%;
  justify-content: center;
  display: flex;
  margin: 0 auto;
}

.navbox .nav li {
  list-style: none;
  list-style: none;
  line-height: 45px;
  padding: 0 50px;
}

.navbox .nav li a {
  display: block;
  text-decoration: none;
  color: #fff;
  height: 50px;
  line-height: 50px;
}
.navbox .nav li a:hover{
  border-bottom:3px solid rgb(12, 116, 132);
}
.navbox .nav li a:hover {
  background: #7D8C9A;
}
/* 标题 */
.title{
  text-align: center;
  padding: 2% 0;
}
.title_top{
  font-size: calc(100vw * 40 / 2310);
  letter-spacing: 5px;
}
.title_bottom{
  font-size: calc(100vw * 25 / 2310);
  color: #888888;
}
/* 简介 */
.introduce .box_bottom{
  width: 70%;
  height: 70vh;
  display: flex;
  margin: 0 auto;
  padding: 7vh 0;
}
.intro_left{
  width: 40%;
  height: 60vh;
  background-color: antiquewhite;
}
.intro_left img{
  width: 100%;
  height: 100%;
}
.intro_right{
  width: 45%;
  height: 80vh;
  margin-left: 5%;
  font-size: calc(100vw * 30 / 2310);
  line-height: 5vh;
  letter-spacing: 0.1rem;
}
/* 研究内容 */
.con_box{
  display: flex;
  width: 85%;
  height: 50vh;
  margin: 0 auto;
  padding: 10vh 0;
  justify-content: space-around;
}
.con{
  width: 25%;
  height: 50vh;
  box-shadow: 0px 0px 5px 1px rgba(35,24,21,0.25);
  cursor: pointer;
}
.con .top1{
  height: 25vh;
  background-image: url(../../images/DXLaboratory/content1.png);
  background-size: 100% 100%;
}
.con .top2{
  height: 25vh;
  background-image: url(../../images/DXLaboratory/content2.png);
  background-size: 100% 100%;
}
.con .top3{
  height: 25vh;
  background-image: url(../../images/DXLaboratory/content3.png);
  background-size: 100% 100%;
}
.con .center{
  font-size: calc(100vw * 30 / 2310);
  line-height: 5vh;
  padding: 8% 4%;
  letter-spacing: 0.1rem;
}
.con .bottom{
  padding-left: 4%;
}
/* 公众号 */
.code{
  padding-bottom: 10vh;
  text-align: center;
}
.code img{
  width: 20%;
  height: 20%;
}
@media screen and (max-width: 500px){
  #header{
    display: none;
  }
  #footer{
    display: none;
  }
  .intro_bottom{
    width: 75vw;
  }
  .title_top{
    font-size: 1rem;
    font-weight: 550;
    letter-spacing: 5px;
  }
  .title_bottom{
    font-size: calc(100vw * 25 / 2310);
    color: #888888;
  }
   /* 公司简介 */
   .box_bottom{
    width: 70vw;
    height: 47vh;
    margin: 0 auto;
    padding: 5% 0;
  }
  .intro_left{
    display: none;
  }
  .intro_right{
    width: 80vw;
    height: 55vh;
    font-size: 0.8rem;
    line-height: 1.2rem ;
  }
  /* 研究内容 */
  .con_box{
    display: block;
    margin: 0 auto;
    padding: 0;
    height: 135vh;
  }
  .con{
    width: 100%;
    height: 40vh;
    margin-top: 5vh;
  }
  .con .top1{
    height: 20vh;
  }
  .con .top2{
    height: 20vh;
  }
  .con .top3{
    height: 20vh;
    
  }
  .con .center{
    font-size: 1rem;
    line-height: 4vh;
    padding: 6% 4%;
  }
  .code img{
    width: 35%;
  }
}