@media (min-width:1200px){

}
@media (min-width:992px) and (max-width:1199px){

}

@media (min-width:768px) and (max-width:991px){
    /*首页论文居中*/
    .con_text{
        margin-right: 0px !important;
    }
    /*出版时间独占一行*/
    .pd_phone{
        display: block;
    }
    #page_content{
        margin-right: -25px !important;
        margin-left: 0px !important;
        padding: 0px !important;
    }
        .right_tatle{
        margin-left: 10px !important;
    }
    .right_div{
        margin-left: 10px !important;
    }
}

@media (min-width:380px) and (max-width: 767px){
    .left_div{
        display: none;
    }
    #page_content{
        margin-right: 0px !important;
        margin-left: 0px !important;
        padding: 0px !important;
    }
    .con_div_container{
        padding-left: 5px;
        padding-right: 13px;
    }
}
@media (min-width:321px) and  (max-width: 379px){
    .left_div{
        display: none;
    }
    #page_content{
        margin-right: 0px !important;
        margin-left: 0px !important;
        padding: 0px !important;
    }
    .con_div_container{
        padding-left: 5px;
        padding-right: 13px;
    }
}
@media (max-width: 320px){
    .left_div{
        display: none;
    }
    #page_content{
        margin-right: 0px !important;
        margin-left: 0px !important;
        padding: 0px !important;
    }
    .con_div_container{
        padding-left: 5px;
        padding-right: 13px;
    }
}