body {
  width: 100%;
}
.md_show{
  display: none;
}
.pc_show{
  display: block;
}
.imgBoxMd{
  display: none;
}
@media (max-width: 768px) {
  .pc_show{
    display: none;
  }
  .md_show{
    display: block;
  }
  nav {
    width: 100%;
    margin: 0 auto;
      }
      .bigBox{
        width: 100%;
        height:18rem;
      }
      .nav{
        width: 86%;
        margin: 0 auto;
        overflow: hidden;
      }
      .nav img{
        width: .8rem;
        height: .8rem;
        margin-top: .3rem;
        
      }
      .nav p{
        font-size: .3rem;
        line-height: 1.4rem;
        margin-left: .2rem;
      }
      .bannerLeft{
        width: 90%;
        margin-top: 1rem;
        margin-left: 5%;
        text-align: center;
      }
      .bannerLeft h4{
        font-size: .6rem;

      }
      .bannerLeft h2{
        font-size:.8rem;
      }
      .bannerLeft p{
        font-size: .3rem;
      }
      .bannerRight{
        width: 100%;
        float: right;
        margin-top: .6rem;
      }
      .bannerRight img{
        width: 100%;
        height: auto;
      }
      .btn{
        margin-top: .8rem;
      }
      .btn a{
        width: 80%;
        height: 1rem;
        border-radius: .5rem;
        font-size:.3rem;
        line-height: 1rem;
        margin-right:.2rem;
        margin-left: 10%;
        margin-top: .5rem;
        
      }
      .content h2{
        font-size: .7rem;
        line-height: 1rem;
        margin-top: .9rem;
      }
      .content p{
        width: 80%;
        margin-left: 10%;
      font-size: .3rem;
      margin-top: .3rem;
      }
.imgBox{
  display: none;
}
.imgBoxMd{
  width: 100%;
  display: block;
}
.imgBoxMd img{
  width: 100%;
}
.bottom{
  padding: .8rem 0;
  margin-top: .4rem;
}
.bottom img{
  width: 100%;
  display: none;
  height: auto;
  margin-left: 4rem;
  float: left;
}
.rightBo{
  width: 100%;
  margin-right: 0;
  margin-top: 0;
}
.rightBo h2{
  font-size: .7rem;
  line-height: 1rem;
  text-align: center;
}
.bot{
  width: 100%;
  height:1.2rem;
  line-height: 1.2rem;
  font-size: .28rem;
}






}