#top_nav{
    display: none;
}

#under_post_card1{
    display: none;
}
#under_post_card2{
    display: none;
}

#cnblogs_c1,#cnblogs_ch{
    display: none;
}

body {
    background-image:none ;
    background-color: #428675;

}

#home {
    margin: 15px auto;
}

@media screen and (min-width: 900px) {
    #home {
        width: 75vw;
    }
}


@media screen and (min-width: 1200px) {
    #home {
        width: 70vw;
    }
}