#feed_icon {
    border: #000 solid 2px;
    display: block;
    margin: 50px auto;
    border-radius: 50%;
    transition: all 2.0s;
}

#feed_icon:hover {
    transform: rotate(360deg);
}

#ad_t2,#cnblogs_c1,#under_post_news,#cnblogs_c2,#under_post_kb {
    display:none; !important
}