@media only screen and (max-width: 768px){
  /*banner*/
  #w_grid-1636019837513 {
    margin-top: -30px;
  }
  /*关于*/
  #w_grid-1642732293918{
    width:100%;
    margin:30px auto;
  }
  #w_grid-1645430622159{
    margin-top: 20px;
  }
 /*产品*/
  #w_grid-1642735869402{
    width:100%;
    margin:30px auto 20px;
  }
  /*特点*/
  #w_grid-1642746331846{
    width:100%;
    margin:30px auto 20px;
  }

  /*新闻*/
  #w_grid-1636041086044{
    width:100%;
    margin:30px auto 15px;
  }
  #w_grid-1636079386315{
    width:100%;
    margin-bottom:30px;
  }
}
@media only screen and (max-width: 1440px) and (min-width: 769px){
  /*关于*/
  #w_grid-1642732293918{
    margin:70px auto;
  }
  /*产品*/
  #w_grid-1642735869402{
    margin:70px auto 35px;
  }
  /*特点*/
  #w_grid-1642746331846{
    margin:70px auto 60px;
  }
  /*新闻*/
  #w_grid-1636041086044{
    margin:70px auto 35px;
  }
  #w_grid-1636079386315{
    margin-bottom:70px;
  }
}