#site_nav_under {
    display: none;
}
.c_ad_block, .ad_text_commentbox {
    display: none;
    margin: 0;
    padding: 0;
}
#ad_under_google {
    height: 0;
    overflow: hidden;
}
#ad_under_google a {
    display: none;
}
#google_ad_c1,#div-gpt-ad-1320933818841-0,#google_ad_c2,#div-gpt-ad-1320933818841-1,#ad_under_google{
display:none;
visibility：hidden;
}