#back-to-top {
    background-color: #87CEFA;
    bottom: 0;
    box-shadow: 0 0 6px ##9FB6CD;
    color: white;
    padding: 10px 10px;
    position: fixed;
    right: 120px;
    cursor: pointer;
}
canvas#live2dcanvas {
border: 0 !important;
right: 0;
}
#header {display:none};
<!--去广告-->
#ad_t2 {display:none;!important}
#cnblogs_c1{display:none;!important}
#under_post_news{display:none;!important}
#cnblogs_c2{display:none;!important}
#under_post_kb {display:none;!important}
#cnblogs_c2{display:none}
#cnblogs_c1{display:none}
#cnblogs_send{display:none}
#cnblogs_event{display:none}
#cnblogs_Link{display:none}
#cnblogs_click{display:none}
.c_ad_block {
    display: none !important;
}

#ad_t2{
   display: none !important;
}