#loading{bottom:0;left:0;position:fixed;right:0;top:0;z-index:9999;line-height:2em;background-color:#f4f5f5;pointer-events:none;}.loader-inner{will-change:transform;width:40px;height:40px;position:absolute;top:50%;left:50%;margin:-20px 0 0 -20px;background-color:#3742fa;border-radius:50%;animation:scaleout 0.6s infinite ease-in-out forwards;text-indent:-99999px;z-index:999991;}@keyframes scaleout{0%{transform:scale(0);opacity:0;}40%{opacity:1;}100%{transform:scale(1);opacity:0;}}
ad_t2,opt_under_post,ad_text_commentbox，ad_text_under_commentbox，
.c_ad_block,
under_post_news,cnblogs_ch,#cnblogs_ch,
under_post_kb {
  display: none !important;
}
#cnblogs_ch{
   display: none !important;
}
<style>
body{"
line-height: 2em;
"
}
</style>