.header{

    position: relative;

}



.newtitle{

    text-align: center;

    font-size: 20px;

    margin-top: 100px;

    font-weight: bold;

}



.newtime{

    text-align: center;

    margin-top: 20px;

}



.newcontent{

    width: 1200px;

    margin: auto;

    margin-top: 40px;

}

.newcontent img,.newcontent video{
    max-width: 100%;
    height: auto;
}


.prev-next{

    width: 1200px;

    margin: auto;

    margin-top: 50px;

    margin-bottom: 100px;

}



.prev-next a{

    color: black;

    line-height: 30px;

}



@media screen and (max-width: 1500px) {

    .newcontent{

        width:80%;

    }



    .prev-next{

        width:80%;

    }



    .newtitle{

        margin-top: 70px;

    }

}



@media screen and (max-width: 1024px) {

    .newtitle{

        margin-top: 40px;

    }



    .prev-next{

        margin-bottom: 70px;

    }

}



@media screen and (max-width: 450px) {

    .newcontent{

        width:90%;

    }



    .prev-next{

        width:90%;

    }



    .newtitle{

        margin: auto;

        margin-top: 20px;

        width: 90%;

        font-size: 18px;

    }



    .prev-next{

        margin-bottom: 50px;

    }



    .newtime{

        margin-top: 13px;

    }

}